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) | 1.7 | 39467 | ||
Preanal L. % TL |
Place of development | planktonic | |||
Larval area | Delaware Bay | |||
Yolk-sac | Ref: | |||
Yolk | Oil globules | |||
Rows on tail | ventral + lateral row | |||
Other melanophores on tail | no other melanophores | |||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Head robust; larval teeth present, pigment lines ventrally and mid-laterally. At 2.9 mm, the chief recognition marks are the deep anterior half of the body, slender tail, and 2 black pigment lines on caudal portion of the body. |
Striking feature | other | |||
Striking shape lateral | other | dorsal | ||
Striking feature | other | |||
Shape of gut | triangular | |||
Gas bladder early | late | |||
Spinal armature early | late | |||
Pigmentation early | ||||
Rows on tail | no rows | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head | |||
Pigmentation late | ||||
Rows on tail | no rows | |||
Other melanophores on tail | tail partly covered with melanophores | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Urostyle region early | unpigmented | late | unpigmented | |
Pectorals | normal without melanophores | |||
Pelvics | normal (i.e. small or absent) without melanophores | |||
At 3.8 mm, tail deeper than before; dark pigment on premaxilla. At 5.8 mm, body more rotund; about 25 myomeres; caudal fin well developed and rounded; soft rays of 2nd dorsal and anal mostly differentiated. At 8 mm SL, body proportionately more slender; head broader; spinous dorsal evident; caudal fin pointed (rays nearly as long as head length); middle portion of body with scattered chromatophores. At 10.0 mm, greatest body depth about 3.6 to 3.8 in SL; full complement of fin rays; caudal fin symmetrical and very pointed; dark pigment nearly everywhere. Distinguishable from M. saxatilis by: long, pointed and nearly symmetrical caudal fin; by nearly colorless ventral fins and partly black spinous dorsal. |
L 1st feeding | Ref. |
Months of presence of larvae
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max | Jan | Feb | Mar | Apr | ||
min | May | Jun | Jul | Aug | ||
mod | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
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