Cynolebias attenuatus is only known from some very few location near Bom Jezus da Lapa, Bahia state, Brasil. The species was not available for hobbyist and only known from preserved material. First discovery by Gilberto Campello Brasil, April 30. 1994. (Types for the description were collected later by Costa, F. Pupo % Araujo, February 13. 1999)

No data available but assumed not different from its congeners. Breeding Cynolebias attenuatus is not for inexperienced hobbyists. The species becomes relative large and need special attention in feeding and storing the eggs. Food demand is high as the species need to grow to adulthood within a few months and eggs need to be stored under very cool circumstances in wich a frigidaire could become a good tool.

As they live in stagnant pools and flooded areas that often are muddy and at the end of the rainy season around may and june becomes highly turbid, the water should be not low in pH. Temperature range can vary from 20 to 35 C.

Reproduction is best with one male and a number of big females. Tank need at least contain 60 liters and provide shelter for the females as male can be very agressive. Also females are known to be agressive to each other. Put a high container filled with neutral pH material like Coco peat or clay (or a mix of it) for spawning.

Eggs are 2.2 mm in diameter and need about 4 to 5 months to develop. Juveniles that grow faster than others should be separated from the smaller ones immediately as they prey on them.

Remarks :

As with almost all other species this one is seldom available under hobbyists.

Max. size 13.0 cm in males - fem.smaller.
Dorsal (average, male only ) 17.0,
Anal (average, male only ) 20.1,
D/A (average, male only ) 3.5,
LL scale count (average) 42.0
Pre- dorsal length to SL – 51.0 %
Depth to SL – 27.8 %

Vertebrae count (average) 36.0