Results for “polymorphic”
Type a name: scientific, common, or one a species used to go by. Or narrow the catalogue with the filters.
Filters
Ageneiosus ucayalensisDuck Catfish
Castelnau, 1855
Max length290mm SL11in SLTank180 × 60cm72 × 24inTemp22.5–28°C73–82°FpH5.5–7.5Apparently this species is polymorphic with body patterning varying significantly depending on locality. Individuals collected from black water habitats tend to be noticeably darker in overall colouration, for example, with this being particularly evident among populations from the Guiana Shield. The genus Ageneiosus was at one point classified in...
Apistogramma commbraeA93
Regan, 1906
Max length♂ 50 · ♀ 30mm SL♂ 2.0 · ♀ 1.2in SLTank60 × 30cm24 × 12inTemp15–27°C59–81°FpH6.0–7.4Apistogramma commbrae and other members of the commbrae complex can be distinguished from congeners by the conspicuous double caudal peduncle spot. This species may also be polymorphic, with some males exhibiting red and blue markings on the cheeks and a yellow gular region.