| FishBase |
Larvae Information Summary for
Strongylura exilis
| Main Ref: | Watson, W. 1996 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 9.3 | 6.2 | ||
| Preanal L. % TL |
| Place of development | planktonic | |||
| Larval area | California Current region | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
Post larvae
| Striking feature | lower jaw strongly projecting | |||
| Striking shape lateral | normal (not striking) | dorsal | ||
| Striking feature | lower jaw strongly projecting | |||
| Shape of gut | ||||
| Gas bladder early | late | |||
| Spinal armature early | late | |||
| Pigmentation early | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Pigmentation late | ||||
| Rows on tail | no rows | |||
| Other melanophores on tail | tail completely covered with melanophores | |||
| Melanophores on head + trunk | melanophores on head + trunk | |||
| Urostyle region early | pigmented | late | pigmented | |
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) without melanophores | |||
| Larvae nearly completely pigmented; very elongate and slender with long preanal length; lower jaw begins to elongate into beak by end of yolk absorption (about 7-10 mm) and upper jaw begins to elongate by about 16 mm; dorsal fin rays 13-17, anal fin rays 16-19. Pigmentation: Larvae: completely pigmented initially except on branchiostegal membrane, pectoral fin blades, median finfold, and end of gut; decreasing lateral melanistic pigment on trunk after about 27 mm. Sequence of fin development: caudal, dorsal and anal and pectorals, pelvics. | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of vertebrae | 74 | 67 | 36575 |
| 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 |