Afterwards hypurals 3-5, the neural spines, haemal
, epural and caudal fin rays developed between 5.34 mm to 5.91 mm (16-18 DPH, Fig.
Anterior anal-fin pterygiophores were anterior to the first pterygiophore supported by the first haemal
spine and did not include the anteriormost 1 or 2 rayless pterygiophores.
Penultimate vertebra bearing very large haemal
The swim bladder with two anterior extensions extending forward to basioccipital on both sides above auditory capsule; two posterior extensions extending into haemal
funnel beyond posterior end of body cavity (the roots of two posterior extensions are non-adjacent and two posterior extensions are not well-knitted); a single duct-like process originating from ventral surface of swim bladder (between the roots of two posterior extensions) and reaching urogenital opening.
The ventral margins bear stout facets for the insertion of the haemal
These include: a very narrow, splinter-like metapterygoid; short slender gill rakers on the lower limb of the first arch; a short papillae row b, never extending to posterior of the pupil; a modified first haemal
arch; the caudal fin elongate but with the upper rays 3,4,5 shorter than the corresponding rays on the ventral half of the fin, forming a notch in the upper margin of the fin.
The caudal skeleton consisted of one ural centrum, preural centra, neural and haemal
spines, three epurals, two uroneurals, one superior hypural ([HY.sub.4.5]), one inferior hypural ([HY.sub.1-3]), and 25-31 caudal-fin rays (7-11, 6 + 6, 4-8) (Fig.
Essentially, in type A, the last two abdominal vertebrae are of the usual perciform configuration in that they lack a bony connection across the midline between the bases of the paired haemal
arches, and the first (and often subsequent two to three) caudal vertebrae have a single greatly enlarged canal with only the tips of the haemal
arches fused together in the midline.
Vertebral column At hatching, all neural and haemal
spines are present and ossified (Table 2).
arch not expanded, abdominal/caudal vertebral transition of Type B (Winterbottom & Zur 2007: Fig.
The first caudal vertebra is that with the haemal
spine supporting the first anal-fin ray.
Vertebrae and haemal
spines were observed from radiographs.