Hasemania melanura, Hemigrammus nanus
||Up to 2 in (5 cm)
||SOUTH AMERICA: Small streams in the San Francisco
River region of Brazil.
|Min Tank Size:
||15 gallons or larger for schools.
|Min Shoal Size:
||Best in groups of six or more. Tend to nip in smaller numbers.
||Omnivorous, will accept most flake foods, frozen,
live and freeze-dried. Should also have some small foods such as brine shrimp, and Bloodworms to supplement their diet.
||Peaceful and active schooling fish, should be kept
in groups of 6 or more. May nip fins of other fish.
||Water Chemistry not critical, temperature 72 - 82°F
(22 – 28°C) pH 6.0-8.0 dH range: 5 - 19
||Tank arranged in dark colors; densely planted; an open-water swimming area is important.
||A peaceful shoaling fish for non-aggressive communities. Tankmates might include corydoras and other small, peaceful catfish, danios, dwarf cichlids, gouramis, most livebearers, rasboras and other peaceful tetras. Keeping H. nana as part of a shoal of a minimum of 6 fish is recommended as these fish are fin-nippers without the security of being part of a shoal. A ratio keeping 1 male to 2 females is advised.
||Moderately easy to keep, however will not tolerate dramatic changes to their environment.
||Hasemania is unique within Characidae for their absence of an adipose fin.