FishBase |
Main Ref: | Page, L.M. and P.W. Smith 1970 |
max | min | mod | Ref. | |
Length at birth (mm) | 5.5 | 69400 | ||
Preanal L. % TL |
Place of development | in close association with substrate | |||
Larval area | Embarras River, Illinois | |||
Yolk-sac | elongated pigmented | Ref: | ||
Yolk | Oil globules | |||
Hatchlings have red blood, numerous melanophores on the ventral half of the body, and metallic gold eyes. In 2-day-old larvae, the lower jaw was evident, rays had formed in the pectoral fins, and the yolk sac was small. At 3 days, obvious breathing actions could be observed and at four days, the fry were feeding on prepared food. At 5 days, the yolk sac was gone and numerous melanophores were distributed along the myomeres. |
Striking feature | ||||
Striking shape lateral | dorsal | |||
Striking feature | ||||
Shape of gut | ||||
Gas bladder early | late | |||
Spinal armature early | late |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
Back to Search |