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Larvae Information Summary for
Psettodes erumei
| Main Ref: | Leis, J.M. and D.S. Rennis 1984 | |||
Yolk-sac larvae
| max | min | mod | Ref. | |
| Length at birth (mm) | 3 | 1698 | ||
| Preanal L. % TL |
| Place of development | ||||
| Larval area | to be filled | |||
| Yolk-sac | Ref: | |||
| Yolk | Oil globules | |||
| Rows on tail | ||||
| Other melanophores on tail | ||||
| Yolk sac larvae have a large yolk sac, lightly pigmented eyes, and body pigment that does not change substantially during the yolk-sac stage. | ||||
Post larvae
| Striking feature | some dorsal fin rays very elongated | |||
| Striking shape lateral | short and/or deep | dorsal | compressed | |
| Striking feature | some dorsal fin rays very elongated | |||
| Shape of gut | spherical or gut loop | |||
| Gas bladder early | pigmented | late | pigmented | |
| Spinal armature early | no spines | late | opercular spines only | |
| Pigmentation early | ||||
| Rows on tail | dorsal + ventral row | |||
| Other melanophores on tail | no other 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 | unpigmented | |
| Pectorals | normal without melanophores | |||
| Pelvics | normal (i.e. small or absent) | |||
| The first about 10 rays of the dorsal fin are elongated and form in advance of all other fin rays. The head is large with extremely large jaws. Long, recurved canine teeth develop at 4 mm. Few small preopercular spines form during flexion at about 5 mm length. (See larval pictures below from Ref. 1698). | ||||
Meristic characters
| max | min | mod | Ref. | |
| Total number of myomeres | 24 | 1698 | ||
| Preanal number of myomeres | 9 | 1698 |
| 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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