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''Carinotetraodon irrubesco'', known commonly as the red-tail dwarf puffer, is a
freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...
pufferfish found only in the lower Banyuasin basin in
South Sumatra South Sumatra ( id, Sumatra Selatan) is a province of Indonesia. It is located on the southeast of the island of Sumatra, The province spans and had a population of 8,467,432 at the 2020 Census. The capital of the province is Palembang. The pro ...
and the Sambas River in
West Kalimantan West Kalimantan ( id, Kalimantan Barat) is a province of Indonesia. It is one of five Indonesian provinces comprising Kalimantan, the Indonesian part of the island of Borneo. Its capital city is Pontianak, Indonesia, Pontianak. The province has ...
.


Characteristics

''Carinotetraodon irrubesco'' are small pufferfish growing to around . They live in murky, acidic water amongst submerged vegetation alongside
rasbora ''Rasbora'' is a genus of fish in the family Cyprinidae. They are native to freshwater habitats in South and akistan s_...
s,_pipefish.html" ;"title="outheast Asia, as well as southeast China. A single species, ''R. gerlachi'', is only known from an old Zoological specimen">s ...
s, pipefish">outheast Asia, as well as southeast China. A single species, ''R. gerlachi'', is only known from an old Zoological specimen">s ...
s, pipefish, halfbeaks, and gobies. Like other species in its genus, sexual dimorphism is apparent. Males are larger and coloured brown with creamy stripes on the flanks and dorsal surface, females are smaller and mottled brown in colour with irregular markings on the ventral surface. Both sexes have red eyes but only males possess red tail fins. Red-tail dwarf puffers are sometimes kept as an aquarium fish, but otherwise have no commercial importance.


In Captivity

It is important that the ''C.irrubesco'' is given the provision of a very soft, fine sand substrate - at least 2cm deep (0.79 inches) - so the fish is able to wallow. They will wallow at night when resting and to escape
predation Predation is a biological interaction where one organism, the predator, kills and eats another organism, its prey. It is one of a family of common feeding behaviours that includes parasitism and micropredation (which usually do not kill the ...
during the day. They best thrive in heavily planted tanks providing much soft leafy coverage. Moss will be used for spawning.Carinotetraodon Irrubesco Pufferfish Caresheet
Pufferfish Enthusiasts Worldwide


References

{{Taxonbar, from=Q2700384 Carinotetraodon Fishkeeping Freshwater fish of Indonesia Fish described in 1999 Endemic fauna of Indonesia Endemic fauna of Borneo