temperature variation between 28 to 30°C for reproduction as found in this experiment. Swingle (1961) recommended a pH varia- tion between 6.5 and 9, values higher or lower prevent reproduction, although Axelrod (1976) reported that angelfish prefer a pH lower than 7 in the Amazon River effluents. In this paper was between 7.8 and 9.0. The type of food has an important influ- ence on the nutrition of fish larvae. Shirota (1970) related the size of the mouth of marine fish larvae and the prey size by an index. Lavens & Sorgeloos (1996) and Coutteau (1996) mentioned those fish larvae of 2 to 3mm preys on 300µm organisms, whereas fish larvae of 3 to 5mm prey on 1mm organisms. Rottmann (1989) mentioned that adults of Moina (700-1 000µm) are bigger than Artemia nauplii (500µM) and three times more than rotifers. D. magna is twice as big as Moina, reason for which it is recommended to feed angelfish larvae older than 10 days. In commercial fish culture, rotifers are the first live food given, from day 2 to 20; actually
temperature variation between 28 to 30°C for reproduction as found in this experiment. Swingle (1961) recommended a pH varia- tion between 6.5 and 9, values higher or lower prevent reproduction, although Axelrod (1976) reported that angelfish prefer a pH lower than 7 in the Amazon River effluents. In this paper was between 7.8 and 9.0. The type of food has an important influ- ence on the nutrition of fish larvae. Shirota (1970) related the size of the mouth of marine fish larvae and the prey size by an index. Lavens & Sorgeloos (1996) and Coutteau (1996) mentioned those fish larvae of 2 to 3mm preys on 300µm organisms, whereas fish larvae of 3 to 5mm prey on 1mm organisms. Rottmann (1989) mentioned that adults of Moina (700-1 000µm) are bigger than Artemia nauplii (500µM) and three times more than rotifers. D. magna is twice as big as Moina, reason for which it is recommended to feed angelfish larvae older than 10 days. In commercial fish culture, rotifers are the first live food given, from day 2 to 20; actually
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