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The oscar (Astronotus ocellatus) is a species of fish from the cichlid family known under a variety of common names, including tiger oscar, velvet cichlid, and marble cichlid. [2] In tropical South America, where the species naturally resides, A. ocellatus specimens are often found for sale as a food fish in the local markets.
Astronotus is a genus of South American fish from the family Cichlidae.There are two commonly recognized species in the genus (listed below), though genetic evidence suggests that additional species exist; several of these possibly distinct populations also have very different juvenile coloration from the two recognized species.
In your list of “most intelligent fish,” the Tiger Oscar is called an African cichlid. That is INCORRECT! That is INCORRECT! Oscars all come from South America waters only, NEVER from Africa.
Astronotus crassipinnis is a South American fish in the cichlid family from the southern Amazon basin and the Paraná–Paraguay basins. [1] It is not as well-known or common in the aquarium trade as its relative, the more northernly distributed oscar (A. ocellatus). [2] A. crassipinnis reaches up to 25 cm (10 in) in length. [1]
Among eight new species of fish identified in Peru's Alto Mayor region this year, the most shocking was the "blob-headed fish," according to a report published this month by the nonprofit group ...
And about 440 species are endemic to Indonesia. This makes Indonesia as the 4th country with the largest endemic freshwater fish species, with Brazil (1716 species) in the 1st place, China (888) in the 2nd place and USA (593 species) in the 3rd place. (Dody94 2011) Below is the list of Indonesian endemic freshwater fishes:
Some species that always live in shoals or that swim continuously (because of a need for ram ventilation of the gills, for example) are suspected never to sleep. [4] There is also doubt about certain blind species that live in caves. [5] However, other fish do seem to sleep, especially when purely behavioral criteria are used to define sleep.
Common names of fish can refer to a single species; to an entire group of species, such as a genus or family; or to multiple unrelated species or groups. Ambiguous common names are accompanied by their possible meanings. Scientific names for individual species and higher taxa are included in parentheses.