''Goussia'' is a taxonomic genus, first described in 1896 by Labbé, containing parasitic protists which largely target fish and amphibians as their hosts. Members of this genus are homoxenous and often reside in the gastrointestinal tract of the host, however others may be found in organs such as the gallbladder or liver.Dogga, S. K., Bartošová-Sojková, P., Lukeš, J., & Soldati-Favre, D. (2015). Phylogeny, Morphology, and Metabolic and Invasive Capabilities of Epicellular Fish Coccidium Goussia janae. Protist, 166(6), 659–676. https://doi.org/10.1016/j.protis.2015.09.003 The genera Goussia, as current phylogenies indicate, is part of the class Conoidasida, which is a subset of the parasitic phylum Apicomplexa; features of this phylum, such as a distinct apical complex containing specialized secretory organelles, an apical polar ring, and a conoid are all present within Goussia, and assist in the mechanical invasion of host tissue.Morrissette, N. S., & Sibley, L. D. (2002). Cytoskeleton of Apicomplexan Parasites. Microbiology and Molecular Biology Reviews, 66(1), 21–38. https://doi.org/10.1128/MMBR.66.1.21-38.2002 The name Goussia is derived from the French word gousse, meaning pod. This name is based on the bi-valve sporocyst morphology which some Goussians display. Of the original 8 classified Goussians, 6 fit the “pod” morphology.Dyková, I., & Lom, J. (1981). Fish coccidia: critical notes on life cycles, classification and pathogenicity. Journal of Fish Diseases, 4(6), 487–505. https://doi.org/10.1111/j.1365-2761.1981.tb01161.x As of this writing, the genera consists of 59 individual species.

Description

Physiology Goussians share a similar morphology, with certain characteristics remaining widely conserved throughout the genera. In general goussians have thin walled

oocyst Apicomplexans, a group of intracellular parasites, have life cycle stages that allow them to survive the wide variety of environments they are exposed to during their complex life cycle. Each stage in the life cycle of an apicomplexan organism i ...

s lacking a

micropyle Micropyle may refer to: * Micropyle (botany) In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (o ...

, which contain four bivalved sporocysts. The two valves composing the sporocyst are identical and have a single longitudinal joint running along the midline. In some specific species there is a dual membrane structure which is associated with the joint. These associated membranes are quite delicate and can be difficult to observe under an electron microscope as the fixation process often leads to damage or the full destruction of this membranous structure.Jirků, M, Modrý D, Šlapeta JR, Koudela B & Lukeš J (2002). The Phylogeny of Goussia and Choleoeimeria (Apicomplexa; Eimeriorina) and the Evolution of Excystation Structures in Coccidia. Protist 153(4) 379–390. https://doi.org/10.1078/14344610260450118. As do many apicomplexans, ''Goussia'' feature a conical shaped structure towards the apical end of their cells made of fibers, which are currently unknown, that surround the

rhoptries A rhoptry is a specialized secretory organelle. They are club-shaped organelles connected by thin necks to the extreme apical pole of the parasite. These organelles, like micronemes, are characteristic of the motile stages of Apicomplexa protoz ...

. The conoid is thought to have a mechanical function and assist in the entrance into host cells in order to form a characteristic parasitophorous vacuole.Morrissette NS, & Sibley LD (2002) Cytoskeleton of Apicomplexan Parasites. Microbiology and Molecular Biology Reviews, 66(1) 21–38 https://doi.org/10.1128/MMBR.66.1.21-38.2002R Rhopteries and micronemes are located below the conoid in the apical end of the cell. These two organelles have a unique secretory function and aid in the adhesion to

enterocyte Enterocytes, or intestinal absorptive cells, are simple columnar epithelial cells which line the inner surface of the small and large intestines. A glycocalyx surface coat contains digestive enzymes. Microvilli on the apical surface increase its ...

s in the gastrointestinal tract. This ensures that ''Goussia'' is able to gain substantial access to host cells, before being passed through the host with the feces.Morrissette NS, & Sibley LD (2002) Cytoskeleton of Apicomplexan Parasites. Microbiology and Molecular Biology Reviews 66(1) 21–38. https://doi.org/10.1128/MMBR.66.1.21-38.2002 Members of the genera ''Goussia'' also retain an apical polar ring, which act as

microtubule Microtubules are polymers of tubulin that form part of the cytoskeleton and provide structure and shape to eukaryotic cells. Microtubules can be as long as 50 micrometres, as wide as 23 to 27 nm and have an inner diameter between 11 an ...

organizing centers in the cell and

apicoplast An apicoplast is a Synapomorphy, derived non-photosynthetic plastid found in most Apicomplexa, including ''Toxoplasma gondii'', and ''Plasmodium falciparum'' and other ''Plasmodium'' spp. (parasites causing malaria), but not in others such as ''Cry ...

s, which are specialized plastids involved in various synthesis activities carried out by the cell, (heam, lipids etc). It has been noted that the destruction of the

does not immediately kill the cell, but it prevents it from infecting other host cells. Apicoplasts are currently being investigated as a potential drug target to treat apicomplexans; due to the fact that it is derived from previously photosynthetic

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

, herbicidal medications may be able to effectively treat these parasitic conditions without harming any of the host metabolic processes.Botté CY, Dubar F, McFadden GI, Maréchal E & Biot C (2012) ''Plasmodium falciparum'' Apicoplast Drugs: Targets or Off-Targets? Chemical Reviews 112(3) 1269–1283. https://doi.org/10.1021/cr200258w

History

In 1896 Labbé described two new protist genera - ''Goussia'' and ''

Crystallospora ''Crystallospora'' is a genus of Apicomplexa in the family Aggregatidae. History The genus ''Crystallospora'' was created by Labbé in 1896Labbe A (1896) Recherches Zoologiques, Cytologiques et Biologiques sur les Coccidies. Archives de Zoologi ...

'' - which only remained distinct genera up until 1909, at which time both ''Crystallospora'' and ''Goussia'' were reduced to synonyms of ''Eimeria''. Around 1920 other protistologists used the term Goussia as a generic term to refer to new species. Subsequently, by 1953, ''Goussia'' began to somewhat re-emerge, and by some, was now classified as a subgenera of '' Eimeria'' but was later relegated to an Eimerial synonym once again. Currently, ''Goussia'' and ''Eimeria'' are widely considered to be separate genera, with the presence of a Stieda body being characteristic of ''Eimeria''. Stiedal bodies are microscopic organelles located at the polar regions of the cell and act as plugs, keeping the sporocyst’s occluding holes closed until the sporozoites are ready to be released. As it stands there are some piscine coccidia which lack Stiedal bodies and are part of other related genera. These will likely be remedied at some point and these organisms will see new classification under the genre ''Goussia''.

Lifecycle

As Goussians are members of the Coccidians, they exhibit merogany, gamogany and sporogoany, and in representative infections, which are both homoxenous and occur in the gastro intestinal tract of the host, all three lifecycle stages, with the exception of the motile zoites may be observed at all stages of the tract; no particular lifecycle stage is strongly associated with any gross anatomical feature of the host.Gestal, C., & Azevedo, C. (2005). Ultrastructure of Goussia cruciata (Apicomplexa: Coccidia) infecting the liver of horse mackerel, Trachurus trachurus (L.), from Ibero-Atlantic waters. Journal of Fish Diseases, 28(3), 125–132. https://doi.org/10.1111/j.1365-2761.2005.00611.x The vast majority of parasitic cells are localized to the anterior of the intestines, as cell lingering towards the posterior are expulsed from the host with the feces, ready to begin looking for another host. Initially infection occurs with the motile zoite phase of the lifecycle. These cells direct their apical cell apparatus towards the host’s enterocytes and proceed to enter the cells so that their lifecycles may continue. Once physically inside the host’s enterocytes, Goussia localizes in the cell between the cytoplasm and the cell membrane, this particular localization is referred to as extracytoplasmic. Extracytoplasmic localization has two sub stages which occur, the first stage being referred to as “monopodial” and the second stage being referred to as “spider-like”. The monopodial stage occurs on the luminal side of the enterocyte and is characterized by a very close association between the hosts cell membrane and the host derived parasitophorous vacuole membrane, and a single large area of contact with the host cells cytoplasm; thus lending to the name “monopodial”. The spider-like stage is similar to the monopodial stage in that there is a close association of both the host cell membrane and the parasitophorous membrane, however, as opposed to a single large cytoplasmic contact site, there are many more contact sites which tend to be much more filose in morphology.

Hosts

While largely confined to freshwater fish as hosts, some members of ''Goussia'' parasitize

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of li ...

which swim in brackish waters, and others have abandoned fish all together in favour of

amphibians Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arbore ...

and

reptile Reptiles, as most commonly defined are the animals in the class Reptilia ( ), a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates (lizards and snakes) and rhynchocephalians ( ...

s, such as reed

frog A frog is any member of a diverse and largely Carnivore, carnivorous group of short-bodied, tailless amphibians composing the order (biology), order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-f ...

s or common

gecko Geckos are small, mostly carnivorous lizards that have a wide distribution, found on every continent except Antarctica. Belonging to the infraorder Gekkota, geckos are found in warm climates throughout the world. They range from . Geckos ar ...

s. And while the vast majority of ''Goussia'' lifecycles are homoxenous, there have been a few examples of heteroxenous lifecycles which utilize

tubifex worm ''Tubifex'' is a cosmopolitan genus of tubificid annelids that inhabits the sediments of lakes, rivers and occasionally sewer lines. At least 13 species of ''Tubifex'' have been identified, with the exact number not certain, as the species ar ...

s as a sort of vector.Steinhagen D & Körting W (1990) The Role of Tubificid Oligochaetes in the Transmission of ''Goussia carpelli''. The Journal of Parasitology, 76(1), 104–107. https://doi.org/10.2307/3282636

Ecology

Found globally, Goussians are limited in that they need some sort of water source, both to mature in their sporogamy stage, and to be transmitted from host to host. The majority of its identified hosts are freshwater fish.

Phylogeny

Proper taxonomic categorization of ''Goussia'' has been a challenge ever since the genera’s inception. This is due in part to the various similarities shared between ''Goussia'' and ''Eimeria'' including, similar hosts, lifecycle progression and general cell structure. Although the structure of the oocyst in Eimeria can be used as a distinct morphological feature to help identify members of the genus the same is not true for members of ''Goussia''. Goussian oocysts are quite variable and are in no way an exact predictor of taxonomic classification, but at the very least if the species in question lacks the distinctive Eimerian oocyst, than it may reasonably suggest that the species could be a member of ''Goussia''.Jirků M, Jirků, M, Oborník M, Lukeš J, & Modrý D (2009). ''Goussia'' Labbé, 1896 (Apicomplexa, Eimeriorina) in Amphibia: Diversity, Biology, Molecular Phylogeny and Comments on the Status of the Genus. Protist, 160(1), 123–136. https://doi.org/10.1016/j.protis.2008.08.003 As mentioned above stideal bodies also help in the classification of new species under the goussian genera, however these structures are quite small and rely on electron microscopy to be seen. In the classification of new species it would be most prudent to rely more on DNA technologies to differentiate between different species.

Host records

*''Goussia aculeati'' - three-spined stickleback (''

Gasterosteus aculeatus The three-spined stickleback (''Gasterosteus aculeatus'') is a fish native to most inland and coastal waters north of 30°N. It has long been a subject of scientific study for many reasons. It shows great morphological variation throughout its ra ...

'')Steinhagen D, Stemmer B, Körting W (1994) ''Goussia aculeati'' from the three-spined stickleback (''Gasterosteus aculeatus''): field observations and ultrastructural features. Appl Parasitol 35(2):99-106 *''Goussia alburni'' - gudgeon ('' Gobio gobio''), roach ('' Rutilus rutilus''), rudd (''

Scardinius erythrophthalmus The common rudd (''Scardinius erythrophthalmus'') is a bentho-pelagic freshwater fish, widely spread in Europe and middle Asia, around the basins of the North, Baltic, Black, Caspian and Aral seas. Identification Morphologically, this spe ...

'') *''Goussia anopli'' - chubbyhead barb ('' Barbus anoplus'')Molnár K, Avenant-Oldewage A, Székely C (2004) A survey of coccidian infection of freshwater fishes in South Africa, with the description of ''Goussia anopli'' n. sp. (Apicomplexa: Eimeriidae). Syst Parasitol 59(1):75-80 *''Goussia arinae'' - sabre carp (''

Pelecus cultratus ''Pelecus cultratus'', commonly known as the ziege, sichel, sabre carp or sabrefish, is a cyprinid fish species from Eastern Europe and adjacent Asian regions, the only one in its genus, inhabiting the lower reaches of rivers and brackish waters ...

'')Belova LM, Krylov MV (2001) Eight new species of coccidia (Sporozoa, Coccidia) in fishes from the continental waters of Russia. Parazitologiia 35(3):221-227 *''Goussia bettae'' - Siamese fighting fish (''

Betta splendens The Siamese fighting fish (''Betta splendens''), commonly known as the betta, is a freshwater fish native to Southeast Asia, namely Cambodia, Laos, Myanmar, Malaysia, Indonesia, Thailand, and Vietnam. It is one of 73 species of the genus ''Bett ...

'')Molnár K, Shaharom-Harrison F, Székely C (2003) A survey of coccidian infections of freshwater fishes of Peninsular Malaysia, with descriptions of three species of ''Goussia'' Labbé, 1896 (Apicomplexa: Eimeriidae). Syst Parasitol. 55(1):11-18 *''Goussia carpelli'' - bitterling (''

Acheilognathus rhombeus ''Acheilognathus rhombeus'' is a temperate freshwater fish belonging to the Acheilognathinae sub-family of the family Cyprinidae. It originates in Japan and the Korean Peninsula. It was originally described as ''Capoeta rhombea'' by Temminck & S ...

''), bleak ('' Alburnus alburnus''), barbel (''

Barbus barbus The common barbel, ''Barbus barbus'', is a species of freshwater fish belonging to the family Cyprinidae. It shares the common name 'barbel' with its many relatives in the genus ''Barbus'', of which it is the type species. In Great Britain it is ...

''), Baikal lake sculpin ('' Batrachocottus baicalensis''), goldfish (''

Carassius auratus The goldfish (''Carassius auratus'') is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is commonly kept as a pet in indoor aquariums, and is one of the most popular aquarium fish. Goldfish released into the wild have ...

''), Crucian carp (''

Carassius carassius The crucian carp (''Carassius carassius'') is a medium-sized member of the common carp family Cyprinidae. It occurs widely in northern European regions. Its name derives from the Low German ''karusse'' or ''karutze'', possibly from Medieval Lati ...

''), carp (''

Carassius cuvieri The Japanese white crucian carp, also known as Japanese carp, white crucian carp, or gengoro-buna (''Carassius cuvieri''), is a species of freshwater fish in the carp family (family Cyprinidae). It is found in Japan and, as an introduced spec ...

''), Iberian mace (''

Chondrostoma polylepis The Iberian nase (''Pseudochondrostoma polylepis'') is a species of freshwater fish in the family Cyprinidae. It is found in Portugal and in Spain. Its natural habitats are river A river is a natural flowing watercourse, usually freshwa ...

''), Kessler's sculpin ('' Cottus kessleri''), common carp (''

Cyprinus carpio The Eurasian carp or European carp (''Cyprinus carpio''), widely known as the common carp, is a widespread freshwater fish of eutrophic waters in lakes and large rivers in Europe and Asia.Fishbase''Cyprinus carpio'' Linnaeus, 1758/ref>Arkive The ...

''), Manchurian lake gudgeon (''

Gnathopogon strigatus The Manchurian gudgeon (''Gnathopogon strigatus'') is a species of ray-finned fish in the genus ''Gnathopogon'' found in the Amur The Amur (russian: река́ Аму́р, ), or Heilong Jiang (, "Black Dragon River", ), is the world's tenth ...

''), gudgeon ('' Gobio gobio''), silver carp (''

Hypophthalmichthys molitrix The silver carp (''Hypophthalmichthys molitrix'') is a species of freshwater cyprinid fish, a variety of Asian carp native to China and eastern Siberia, from the Amur River drainage in the north to the Xi Jiang River drainage in the south. Alth ...

''), belica (''

Leucaspius delineatus ''Leucaspius delineatus'', known as the sunbleak, belica or moderlieschen is a species of freshwater fish in the family Cyprinidae. It is currently the only species included in genus ''Leucaspius'', whereas formerly others were included, which no ...

''), chub (''

Leuciscus cephalus ''Squalius cephalus'' is a European species of freshwater fish in the carp family Cyprinidae. It frequents both slow and moderate rivers, as well as canals and still waters of various kinds. This species is referred to as the common chub, Europe ...

''), common dace (''

Leuciscus leuciscus The common dace (''Leuciscus leuciscus'') is a species of freshwater and brackish water ray-finned fish from the family Cyprinidae which is native to Europe but which has been introduced to other parts of the world. It is a quarry species for co ...

''), '' Limnocottus eurystomus'', elritze (''

Phoxinus phoxinus The Eurasian minnow, minnow, or common minnow (''Phoxinus phoxinus'') is a small species of Fresh water, freshwater fish in the carp family (biology), family Cyprinidae. It is the type species of genus ''Phoxinus''. It is ubiquitous throughout mu ...

''), stone moroko (''

Pseudorasbora parva The stone moroko (''Pseudorasbora parva''), also known as the topmouth gudgeon, is a fish belonging to the Cyprinid family, native to Asia, but introduced and now considered an invasive species in Europe and North America. The fish's size is rare ...

''), roach ('' Rutilus rutilus'') and tench (''

Tinca tinca The tench or doctor fish (''Tinca tinca'') is a fresh- and brackish-water fish of the order Cypriniformes found throughout Eurasia from Western Europe including the British Isles east into Asia as far as the Ob and Yenisei Rivers. It is also ...

''). Also sludge worms ('' Limnodrilus hoffmeisteri'' and ''

Tubifex tubifex ''Tubifex tubifex,'' also called the sludge worm, "Boogie Worm", or sewage worm, is a species of tubificid segmented worm which inhabits the sediments of lakes and rivers on several continents. ''Tubifex'' probably includes several species, but ...

'')Steinhagen D, Körting W (1990) The role of tubificid oligochaetes in the transmission of ''Goussia carpelli''. J Parasitol 76(1):104-107 *''Goussia cernui'' - Eurasian Ruffe ('' Gymnocephalus cernuus'') *''Goussia cichlidarurn'' - blue tilapia (''

Oreochromis aureus The blue tilapia (''Oreochromis aureus'') is a species of tilapia, a fish in the family Cichlidae. Native to Northern and Western Africa, and the Middle East, through introductions it is now also established elsewhere, including parts of the U ...

''), Nile tilapia (''

Oreochromis niloticus The Nile tilapia (''Oreochromis niloticus'') is a species of tilapia, a cichlid fish native to the northern half of Africa and the Levante area, including Land of Israel, Israel, and Lebanon. Numerous Introduced species, introduced populations ex ...

'') and '' Tilapia zillii'' El-Mansy A (2008) New exogenous stages of oocysts, sporocysts, and sporozoites of ''Goussia cichlidarum'' Landsberg and Paperna 1985 (Sporozoa: Coccidia) and impact of endogenous stages on the swim bladder of tilapias in Egypt. Parasitol Res 102(2):233-241 *''Goussia clupearum'' - garfish ('' Belone belone'')Azevedo C (2001) Fine structure of sporogonic stages of Goussia clupearum (Apicomplexa: Eimeriidae) in the liver of infected fish (Belone belone L.), using light and electron microscopy. Parasitol Res 87(4):326-330 *''Goussia cruciata'' - horse mackerel (''

Trachurus trachurus The Atlantic horse mackerel (''Trachurus trachurus''), also known as the European horse mackerel or common scad, is a species of jack mackerel in the family Carangidae, the jacks, pompanos and trevallies. It is found in the eastern Atlantic Ocean ...

'')Gestal C, Azevedo C (2005) Ultrastructure of ''Goussia cruciata'' (Apicomplexa: Coccidia) infecting the liver of horse mackerel, ''Trachurus trachurus'' (L.), from Ibero-Atlantic waters. J Fish Dis. 28(3):125-132 *''Goussia cultrati'' - sabre carp (''

'') *''Goussia degiusti'' - common shiner (''

Luxilus cornutus The common shiner (''Luxilus cornutus'') is a freshwater fish of the family Cyprinidae, found in North America. It ranges in length between 4 and 6 inches, although they can reach lengths of up to 8 inches. Description The common shiner i ...

''), bluntnose minnow ('' Pimephales notatus''), fathead minnow (''

Pimephales promelas Fathead minnow (''Pimephales promelas''), also known as fathead or tuffy, is a species of temperate freshwater fish belonging to the genus ''Pimephales'' of the cyprinid family. The natural geographic range extends throughout much of North Amer ...

'') *'' Goussia flaviviridis'' - gecko (''

Hemidactylus flaviviridis ''Hemidactylus flaviviridis'' is a species of gecko. It is known as the yellow-belly gecko or northern house gecko. Distribution Its range includes Egypt (Ismailia, Sinai), Saudi Arabia, Qatar, Oman, Iraq, Iran, Afghanistan, Bangladesh, Nepal, P ...

'') *''Goussia girellae'' - opaleye ('' Girella nigricans'') *''Goussia gymnocephali'' - Eurasian Ruffe ('' Gymnocephalus cernuus'') *''Goussia hyperolis'' - common reed frog (''

Hyperolius viridiflavus The common reed frog (''Hyperolius viridiflavus'') is a species of tree frogs in the family Hyperoliidae found in Burundi, the Democratic Republic of the Congo, Ethiopia, Kenya, Rwanda, Sudan, Tanzania, and Uganda, and possibly the Central Af ...

'') *''Goussia iroquoina'' - common shiner (''

''), hornyhead chub (''

Nocomis biguttatus The hornyhead chub (''Nocomis biguttatus'') is a small species of minnow in the family Cyprinidae of order Cypriniformes. It mainly inhabits small rivers and streams of the northern central USA, up into Canada. The adults inhabit faster, rocky p ...

''), blacknose shiner ('' Notropis herterolepis''), rosyface shiner ('' Notropis rubellus''), bluntnose minnow ('' Pimephales notatus''), fathead minnow (''

''), blacknose dace (''

Rhinichthys atratulus Eastern blacknose dace (''Rhinichthys atratulus'') is a species of ray-finned fish in the genus ''Rhinichthys''. Its name originates from the Old French word "dars" which is the nominative form of the word "dart" in reference to their swimming pat ...

''), Creed chub ('' Semotilus atromaulatus'') *''Goussia lusca'' - pouting ('' Trisopterus luscus'')Gestal C, Azevedo C (2006) Ultrastructural aspects of hepatic coccidiosis caused by ''Goussia lusca'' n. sp. (Apicomplexa: Coccidia) infecting ''Trisopterus luscus'' (Gadidae) from the NE Atlantic Ocean. Dis Aquat Organ 71(1):25-31 *''Goussia lacazei (Labbé, 1895) n. comb. in the centipedes Lithobius forficatus and L. martini; *''Goussia luciopercae'' - zander (''

Stizostedion lucioperca The zander (''Sander lucioperca''), sander or pikeperch, is a species of ray-finned fish from the Family (biology), family Percidae, which includes the perches, Gymnocephalus, ruffes and Darter (fish), darters. It is found in freshwater and brac ...

'') *''Goussia malayensis'' - '' Apocheilus panchax'' *''Goussia metchnikovi'' - white-finned gudgeon (''

Gobio albipinnatus The white-finned gudgeon (''Romanogobio albipinnatus'') is a species of freshwater fish in the family Cyprinidae. It lives in the North Caspian basin in lower parts of the Volga and Ural River The Ural (russian: Урал, ), known before 177 ...

''), gudgeon ('' Gobio gobio''), Kessler's gudgeon ('' Gobio kessleri''), Amur whitefin gudgeon (''

Romanogobio tenuicorpus The Amur whitefin gudgeon (''Romanogobio tenuicorpus'') is a species of cyprinid fish found in the Amur The Amur (russian: река́ Аму́р, ), or Heilong Jiang (, "Black Dragon River", ), is the world's List of longest rivers, tenth ...

'') *''Goussia molnarica'' - catfish (''

Clarias gariepinus ''Clarias gariepinus'' or African sharptooth catfish is a species of catfish of the family Clariidae, the airbreathing catfishes. Distribution They are found throughout Africa and the Middle East, and live in freshwater lakes, rivers, and swa ...

'')El-Mansy A (2008) ''Goussia molnarica'' n. sp. (Apicomplexa: Coccidia) infecting the gut of the freshwater catfish ''Clarias gariepinus'' in Egypt. Dis Aquat Organ 82(2):165-169 *''Goussia peleci'' - sabre carp (''

'') *''Goussia pogonognathi'' - '' Hemirhamphodon pogonognatus'' *''Goussia sinensis'' - silver carp (''

'')Baska F, Molnár K (1989) Ultrastructural observations on different developmental stages of ''Goussia sinensis'' (Chen, 1955), a parasite of the silver carp (''Hypophthalmichthys molitrix'' Valenciennes, 1844). Acta Vet Hung 37(1-2):81-87 *''Goussia sparis'' - gilt-head bream (''

Sparus aurata The gilt-head (sea) bream (''Sparus aurata''), known as Orata in antiquity and still today in Italy and Tunisia (known as "Dorada" in Spain, "Dourada" in Portugal and "Dorade Royale" in France), is a fish of the bream family Sparidae found in t ...

'') *''Goussia vanasi'' - banded tilapia ('' Tilapia sparrmanii'') *''Goussia vimbae - '' Vimba vimba vimba''

References

{{Taxonbar, from=Q5588476 Apicomplexa genera