IUCN threat status:

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Comprehensive Description

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Description: Body thin, long and narrow with a relatively small, often oval, eye and a terminal medium-sized mouth. Pelvic fins separate and short, pectoral fins short, dorsal and anal-fin bases short, caudal peduncle long and sharply narrowing, procurrent caudal-fin rays 7-9. Markings mostly along the ventral midline: melanophores usually as streaks extending from the isthmus to the mid-abdomen, ending at the swim bladder (which is the full thickness of the abdomen and provides a clear view of the retroperitoneum); there is often an additional small melanophore on the promontory just forward of the vent. There are four to six large melanophores along the bases of the last eight anal-fin rays (paired) and continuing as a streak of seven or eight large melanophores along the ventral peduncle ending at the start of the lower procurrent caudal-fin rays (the last in the series often larger and extends deeper into the musculature). There are melanophores at the base of most of the lower segmented caudal-fin rays, some variably extending along the length of the lower segmented caudal rays as well as sometimes on the distal half of the central segmented caudal-fin rays. Head markings consist of melanophores outlining the lower rim of the tip of the dentary of the lower jaw. Varying proportions of individuals in different daily collections possess a melanophore at the angle of the jaw, from none to most. There is usually a prominent "eyebrow" membrane lined with melanophores overlying the dorsal aspect of the upper third of the eyeball. Additional melanophores occur on the occasional individual in any combination of the following: on the proximal membranes of the anal-fin elements (usually the third and fourth, rarely all), overlying the cleithrum visible upon lifting the operculum, or on the outer operculum near the lower edge on each side. Internal melanophores typically surround the saccule (in most well-developed larvae) and are present along the dorsal surface of the swim bladder (none around the gut near the vent). Series of transitional larvae show development of the eye from a narrowed vertical oval, sometimes tilted slightly forward (occasionally backward), with the pupil off-center dorsally, a small posterior-inferior extension of the iris, and often a dorsal indentation in the iris) to almost rounded, sometimes tilted sharply backward.

Dormitator maculatus larva

Dormitator maculatus larvae

Dormitator maculatus larvae

Dormitator maculatus larva

Dormitator maculatus larva

Dormitator maculatus larva

Dormitator maculatus larva

Dormitator maculatus larva

Dormitator maculatus larva

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