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Larvae Information Summary for
Agonus cataphractus
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 8 | 6.3 | 7.5 | |
| Preanal L. % TL | 45 |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | elongated pigmented | Ref: | ||
| Yolk | Oil globules | one oil globuleanteriorpigmented | ||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Large pigmented pectoral fins, very prominent anus, yolk-sac nearly absorbed by hatching. | ||||
Post larvae
| Striking feature | none | |||
| Striking shape lateral | normal (not striking) | dorsal | normal (not striking) | |
| Striking feature | none | |||
| Shape of gut | triangular | |||
| Gas bladder early | invisible | late | invisible | |
| Spinal armature early | otocystic spines only | late | several different spines | |
| Pigmentation early | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | unpigmented | late | pigmented | |
| Pectorals | normal with rows of melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| At 14mm the fin ray formula is:D1,5-6; D2,5-8; A,5-7. | ||||
| 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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