supply was placed near the egg clutch to create water movement and aeration.
Measurements: Data was registered from 20 spawnings. The eggs within each clutch were counted (number of eggs), then the moth- er fish was measured (length mm and height mm), and weighed (weight g) to obtain the relative fecundity: En=z/W, where En=number of eggs per weight (g) of fish; z=number of eggs; W=total weight of fish. The rate of fecundity for weight was calculated using the regression line, Number of eggs=a + b (W), where W: total weight, a: y-intercept, b: slope. Additionally, live larvae were counted to obtain the fertilization rate: live eggs/number of eggs x 100 (Table 1).
Rearing diets: Three different diets were used during 135 days to calculate the growth in length and height of 100 larvae in 40L aquari- ums.
Diet A: Decapsulated cysts of Artemia sp. were used to feed angelfish larvae once a day at a rate of 4cysts/mL for 10 days, thereafter a rate of 6cysts/mL was used until the end of the study. The fish eat ad libitum.
Diet B: Small flakes of “Tetramin” bal- anced food to fit the size of the mouth were given at about 6% to the fish biomass in three rations per day.
Diet C: Once the vitellarium sac had been absorbed, rotifers, Brachionus plicatilis, were given at a rate of 10/mL for 10 days; thereafter, 2 cladocerans D. magna 7/mL were given three times per day until the end of the study. The fish eat ad libitum.
To calculate growth an average of ten fish were used every 15 days. The length (cm) and height (cm) of angelfish larvae samples were first measured using a hematocytometer under a stereoscopic microscope. Later, when the lar- vae reached more than 5mm in length, a petri dish with millimetric paper was used. Fry wet
supply was placed near the egg clutch to create water movement and aeration.
Measurements: Data was registered from 20 spawnings. The eggs within each clutch were counted (number of eggs), then the moth- er fish was measured (length mm and height mm), and weighed (weight g) to obtain the relative fecundity: En=z/W, where En=number of eggs per weight (g) of fish; z=number of eggs; W=total weight of fish. The rate of fecundity for weight was calculated using the regression line, Number of eggs=a + b (W), where W: total weight, a: y-intercept, b: slope. Additionally, live larvae were counted to obtain the fertilization rate: live eggs/number of eggs x 100 (Table 1).
Rearing diets: Three different diets were used during 135 days to calculate the growth in length and height of 100 larvae in 40L aquari- ums.
Diet A: Decapsulated cysts of Artemia sp. were used to feed angelfish larvae once a day at a rate of 4cysts/mL for 10 days, thereafter a rate of 6cysts/mL was used until the end of the study. The fish eat ad libitum.
Diet B: Small flakes of “Tetramin” bal- anced food to fit the size of the mouth were given at about 6% to the fish biomass in three rations per day.
Diet C: Once the vitellarium sac had been absorbed, rotifers, Brachionus plicatilis, were given at a rate of 10/mL for 10 days; thereafter, 2 cladocerans D. magna 7/mL were given three times per day until the end of the study. The fish eat ad libitum.
To calculate growth an average of ten fish were used every 15 days. The length (cm) and height (cm) of angelfish larvae samples were first measured using a hematocytometer under a stereoscopic microscope. Later, when the lar- vae reached more than 5mm in length, a petri dish with millimetric paper was used. Fry wet
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