Melanophores of the angelfish, Pterophyllum scalare, were studied in an attempt to demonstrate the existence of actin in these cells although microfilaments had previously not been found. By use of a variety of procedures, including immunofluorescence microscopy of intact and detergent-extracted cells, transmission electron microscopy, high voltage electron microscopy of whole-mount preparation...

The present study was planned to determine an optimum live-feeding protocol for angelfish larvae (Pterophyllum scalare). Larvae with initial weight of 0.10 mg, a length 4.5 mm, and depth 1 mm were reared on three different feeding regimens 30 days. All experimental larval groups fed Artemia nauplii from the end yolk-sac resorption. control treatment (Group I) maintained days 14-28, + dry feed 2...

The present study aimed to assess the potential substitution of Artemia franciscana nauplii with Moina minuta neonates as initial feed for angelfish (Pterophyllum scalare) and severum (Heros severus), evaluating fish growth performance, live food cost, intestinal histomorphometry. To achieve this goal, two separate experiments were carried out each species during 20 days, using 200 postlarvae. ...