Larvae Information Summary for
Callionymus lyra
| Main Ref: | Russell, F.S. 1976 | |||
Yolk-sac larvae
| min | max | mod | Ref. | |
| Length at birth (mm) | 2 | 2.08 | 2 | |
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | to be filled | |||
| Yolk-sac | elongated pigmented | Ref: | ||
| Yolk | segmented | Oil globules | no oil globule | |
| Rows on tail | no rows | |||
| Other melanophores on tail | one dorso-ventral cluster or band | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Two patches on the dorsal primordial fin, and patches on the ventral one and in the anal region. Anus not open, short away from the end of yolk. | ||||
Post larvae
| Striking feature | urostyle very elongated | |||
| Striking shape lateral | normal (not striking) | dorsal | tadpole-like | |
| Striking feature | urostyle very elongated | |||
| Shape of gut | triangular | |||
| Gas bladder early | invisible | late | invisible | |
| Spinal armature early | opercular spines only | late | opercular spines only | |
| Pigmentation early | ||||
| Rows on tail | dorsal + lateral + 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 + lateral + ventral row | |||
| Other melanophores on tail | tail partly covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | unpigmented | late | unpigmented | |
| Peritoneum | with row of melanophores | |||
| Pectorals | normal with few scattered melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| At about 4 mm length a preopercular spine appears which bifurcates at about 5 mm and becomes a three-pronged appearance at about 6 mm. | ||||
Meristic characters
| min | max | mod | Ref. | |
| Total number of vertebrae | 21 | 65 |
| L 1st feeding | Ref. | Months of presence of larvae | ||||
| max | Jan | Feb | Mar | Apr | ||
| min | May | Jun | Jul | Aug | ||
| mod | 2.3 | Sep | Oct | Nov | Dec | |
| Water parameters Metric characters |