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A new Apistogramma species (Teleostei, Cichlidae) from the Rio Negro in Brazil and Venezuela

1987; Wiley; Volume: 16; Issue: 3 Linguagem: Inglês

10.1111/j.1463-6409.1987.tb00072.x

1463-6409

S. Kullander,

Fish Ecology and Management Studies

Apistogramma diplotaenia sp.n. occurs in the upper and middle Rio Negro. The largest among 186 specimens studied is a 29.2 mm SL male, the largest female is 22.9 mm SL. Distinguishing characters include a unique colour pattern, consisting of two dark bands along the side which converge anteriorly and posteriorly. A comparative osteological study, including other species of Apistogramma and the genera Taeniacara and Apistogrammoides , indicates a progressive forwards loss of infraorbital ossicles and foramina among dwarf cichlids. The long, rod‐like interarcual cartilage of Apistogramma, Apistogrammoides and Satanoperca possibly represents a plesiomorphic condition otherwise unknown among cichlids.