FishBase |
Main Ref: | Scotton, L.N., R.E. Smith, N.S. Smith, K.S. Price and D.P. de Sylva 1973 |
max | min | mod | Ref. | |
Length at birth (mm) | 3.2 | 2.7 | ||
Preanal L. % TL |
Place of development | ||||
Larval area | Delaware Bay (USA) | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | no rows | |||
Other melanophores on tail | more than two dorso-ventral clusters or bands | |||
Vent is halfway between the snout and the tail tip; halfway between the vent and the tip of tail is a diffuse band of melanophores extending onto the dorsal and ventral finfolds. |
Striking feature | ||||
Striking shape lateral | dorsal | |||
Striking feature | ||||
Shape of gut | ||||
Gas bladder early | late | |||
Spinal armature early | late | |||
Pigmentation early | ||||
Rows on tail | dorsal + ventral + lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on trunk | |||
Rows on tail | dorsal + ventral + lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pectorals | normal | |||
Pelvics | normal (i.e. small or absent) | |||
Postanal pigment band is conspicuous and spreads anteriorly and posteriorly at around the time of yolk-sac absorption. At 6 mm, caudal fin ray evident. At 7 mm, dorsal and anal fin rays begin to differentiate. At 9-10 mm, adult complement attained and vertebral counts possible. From this size on, the dorsal fin ray number permits separation of P. oblongus from P. dentatus (D. 80-96). At 10 mm, migration of right eye begins. At 25 mm, the eye is on the dorsal edge of the snout. |
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 |
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