other |
other |
compressed |
other |
elongated |
|
|
no spines |
no spines |
no rows |
two dorso-ventral clusters or bands |
melanophores on head + trunk |
no rows |
two dorso-ventral clusters or bands |
melanophores on head + trunk |
pigmented |
pigmented |
covered with melanophores |
normal melanophores at fin base |
with elongated fin rays melanophores at fin base |
Deeper body and shorter gut than B. exilis and D. longipes; large head with pronounced hump or bend at nape; tubular eyes directed dorsally; anus slightly posterior to midbody; pelvic fin origin anterior to midbody; paired fins large, pelvic fin rays elongate; series on hypaxial myomeres and later on epaxial myomeres; hypural blotch; lower vertebral count (34-37) compared to other genera in region.
Pigmentation:
Flexion: streak extending posteriad from angle of lower jaw; along cleithra; midventrally at liver; internally dorsal to liver; heavy blotch in pelvic fin base, extending dorsad over myomeres and ventrad over gut; median hypural blotch; two lower hypural blotches; series of diagonal streaks on hypaxial myomeres; dorsally on terminal section of gut.
Postflexion: series of epaxial myomeres increases posteriad, complete at transformation.
Transformation: gut enclosed in black sheath; on pectoral fin and pelvic fin rays.
Sequence of fin development: caudal and pectoral and pelvic, dorsal and anal.
Sequence of fin development: caudal, pectorals and pelvics; dorsal and anal. |