FishBase |
Main Ref: | Watanabe, K. 1994 |
max | min | mod | Ref. | |
Length at birth (mm) | 5.1 | 4.1 | ||
Preanal L. % TL |
Place of development | in close association with substrate | |||
Larval area | Japan (aquarium) | |||
Yolk-sac | spherical | Ref: | 33313 | |
Yolk | unsegmented | Oil globules | ||
Melanophores on head + trunk | no melanophores on head or trunk | |||
Has 12-13 + 24-26 = 36-39 myomeres. Two pairs of mandibular barbels present. Auditory region pigmented. Yolk-sac larvae attach themselves to the substrate or the wall of the aquarium using the adhesive surface of the head and barbels, some 2-3 days after hatching. Mouth opens one day after hatching. The yolk is nearly absorbed at 4 days after hatching. Sequence of fin development: Pectoral fin buds are present after hatching; caudal and pectoral (7.8-8.1 mm TL) at about 3 days after hatching. |
Striking feature | none | |||
Striking shape lateral | normal (not striking) | dorsal | ||
Striking feature | none | |||
Shape of gut | ||||
Gas bladder early | late | |||
Spinal armature early | no spines | late | no spines | |
Melanophores on head + trunk | melanophores on head + trunk | |||
Melanophores on head + trunk | melanophores on head + trunk | |||
Pectorals | normal | |||
Pelvics | normal (i.e. small or absent) | |||
Pair of nasal barbels present. Pigmentation: head, body, and fin-fold pigmentation increased. Sequence of fin development: dorsal; pectoral; anal (9.5-10.0 mm TL); caudal (12.0-15.4 mm TL); pelvic (11.9-14.2 mm TL). Completion of fin development by separation of the adipose and caudal fins is attained at 16.0 mm TL. |
L 1st feeding | Ref. | Months of presence of larvae | ||||
max | 9.3 | 33313 | Jan | Feb | Mar | Apr |
min | 8.4 | 33313 | May | Jun | Jul | Aug |
mod | Sep | Oct | Nov | Dec |
Water parameters Metric characters |
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