The royal gramma (''Gramma loreto''), also known as the fairy basslet, is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of fish in the family
Grammatidae
Grammatidae is a small family of ray-finned fishes which were formerly placed in the order Perciformes but are now regarded as being ''incertae sedis'' in the subseries Ovalentaria in the clade Percomorpha. They are commonly known as basslets. Th ...
native to
reef
A reef is a ridge or shoal of rock, coral or similar relatively stable material, lying beneath the surface of a natural body of water. Many reefs result from natural, abiotic processes— deposition of sand, wave erosion planing down rock out ...
environments of the
tropical
The tropics are the regions of Earth surrounding the Equator. They are defined in latitude by the Tropic of Cancer in the Northern Hemisphere at N and the Tropic of Capricorn in
the Southern Hemisphere at S. The tropics are also referred to ...
western
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...
. They are commonly kept in
aquariums
An aquarium (plural: ''aquariums'' or ''aquaria'') is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, a ...
.
Appearance
The fish can be a light purple to a deep violet starting at the head which fades mid-body to a golden yellow at the tail. The royal gramma will also have a small black spot on the front of the dorsal fin and a black line that streaks through the eye. It resembles the false gramma (''
Pictichromis paccagnellae''), with the two main differences between the two being the false gramma has clear fins and does not fade, but rather has a distinct change in color. The royal gramma is relatively small, averaging slightly over and has been tank bred. The largest scientifically-measured royal gramma was long.
Diet
The royal gramma is a planktivore, eating mostly zooplankton and crustaceans. The royal gramma is also a cleaner fish. It removes the ectoparasites (a parasite that lives on the skin of a fish) from other fish and learns to eat dead food, such as crustaceans and fish flesh. They prefer to pick their food from the middle of the water column.
Range
Their natural range covers the
Bahamas
The Bahamas (), officially the Commonwealth of The Bahamas, is an island country within the Lucayan Archipelago of the West Indies in the Atlantic Ocean, North Atlantic. It takes up 97% of the Lucayan Archipelago's land area and is home to ...
,
Venezuela
Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
,
Antilles
The Antilles (; gcf, label=Antillean Creole, Antiy; es, Antillas; french: Antilles; nl, Antillen; ht, Antiy; pap, Antias; Jamaican Patois: ''Antiliiz'') is an archipelago bordered by the Caribbean Sea to the south and west, the Gulf of Mex ...
,
Bermuda
)
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, and through the waters surrounding
Central America
Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...
and the northern part of
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
. The Royal Gramma tends to swim more towards the bottom with the depth range between 1 and 20 m (3 and 60 ft).
In the aquarium
Due to their relatively peaceful nature, diet, and small size, the royal gramma is considered an ideal inhabitant for most reef aquaria containing
coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...
and other invertebrates. Notwithstanding this general statement, they can become aggressive towards tank-mates when kept in smaller
nano reef
A reef aquarium or reef tank is a marine aquarium that prominently displays live corals and other marine invertebrates as well as fish that play a role in maintaining the tropical coral reef environment. A reef aquarium requires appropriately ...
tanks. They stake out territories throughout rocks and crevices and choose favorite hiding places. They are generally peaceful fish, but are very protective of their territories and are known for chasing out other small fish. They tend to stay in one area of the tank and, when startled, will dart back into their holes. They will vigorously guard their hiding places and, when threatened, will open their mouths wide in a threatening gesture to ward off the intruders. The royal gramma tends to orient itself to be parallel with the surface to which it is closest, resulting in the fish swimming straight up and down or sometimes upside down beneath ledges. This behavior is not to be mistaken for illness.
The minimum suggested tank size is 30 gallons and the tank should not receive sharp lighting. The ideal water temperature should range between 72 and 78 °F and the water pH should be between 8.1 and 8.4, with specific gravity of 1.020-1.025. They are often kept in reef aquaria and are generally kept singly or in pairs. However, small groups can be kept as long as the tank is large enough and has enough cracks and crevices for each fish to have its own territory. The royal gramma should not be kept with its own kind unless in a formed male-female pair. It should also not be kept with larger, aggressive fish that will eat them. They are, however, resistant to most diseases and make very good beginner fish. It will also accept frozen and meaty foods, such as brine shrimp and mysis shrimp in the wild. The royal gramma is very easy to feed; but rotating their foods is said to keep them from becoming picky. Captive royal gramma will also eat flake and pellet foods.
Breeding
Although pairs are difficult to find because the difference between male and female is not visible, they are very easy to breed. With males usually being larger than females, the male will build the nest among rocks using pieces of algae. The male will then lead the female to the nest, where she will deposit 20-100 eggs in the nest. The male exhibits the following nest care practices: protecting the nest and eggs, ongoing maintenance, frequent debris removal, and constant barging into the nest. During the breeding period, this behavior is repeated almost every day for a month or longer. The eggs are about 1 mm (0.04 in) and are equipped with small protuberances over the surface with tiny threads extending from them. These threads hold onto the algae of the nest and keep the eggs in place. The eggs will hatch in five to seven days, normally in the evening, and can feed on rotifers until they are large enough to consume newly hatched brine shrimp.
In popular culture
Because the royal gramma is generally a peaceful fish, it gets along with many other types of fish. A royal gramma fish named Gurgle, voiced by (
Austin Pendleton
Austin Campbell Pendleton (born March 27, 1940) is an American actor, playwright, theatre director, and instructor. He is known as a prolific character actor on the stage and screen who has appeared in films including ''Catch-22'' (1970); '' W ...
), appeared in the 2003
Disney
The Walt Disney Company, commonly known as Disney (), is an American multinational mass media and entertainment conglomerate headquartered at the Walt Disney Studios complex in Burbank, California. Disney was originally founded on October ...
/
Pixar
Pixar Animation Studios (commonly known as Pixar () and stylized as P I X A R) is an American computer animation studio known for its critically and commercially successful computer animated feature films. It is based in Emeryville, Californi ...
animated
Animation is a method by which still figures are manipulated to appear as moving images. In traditional animation, images are drawn or painted by hand on transparent celluloid sheets to be photographed and exhibited on film. Today, most anim ...
film ''
Finding Nemo
''Finding Nemo'' is a 2003 American computer-animated comedy-drama adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures. Directed by Andrew Stanton with co-direction by Lee Unkrich, the screenplay was writ ...
'' and the 2016
sequel
A sequel is a work of literature, film, theatre, television, music or video game that continues the story of, or expands upon, some earlier work. In the common context of a narrative work of fiction, a sequel portrays events set in the same ...
''
Finding Dory
''Finding Dory'' is a 2016 American computer-animated comedy-drama adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures. Directed by Andrew Stanton, produced by Lindsey Collins and written by Stanton and Vict ...
''.
References
External links
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{{Taxonbar, from=Q1796254
Royal gramma
The royal gramma (''Gramma loreto''), also known as the fairy basslet, is a species of fish in the family Grammatidae native to reef environments of the tropical western Atlantic Ocean. They are commonly kept in aquariums.
Appearance
The fish c ...
Fish described in 1868
Fauna of the Bahamas
Fauna of the Lesser Antilles
Fish of the Dominican Republic
Fish of Venezuela
Fish of the Atlantic Ocean