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Image of Burmese River ilisha
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Burmese River Ilisha

Ilisha novacula (Valenciennes 1847)

Diagnostic Description

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Body rather slender, belly with 24 to 25 + 10 or 11, total 34 to 36 scutes. Eye large, lower jaw projecting. Dorsal fin origin behind midpoint of body; anal fin origin below dorsal fin base. Swim bladder without a posterior tube (or tubes) passing backward into the body muscles. No toothed hypo-maxilla between hind tip of pre-maxilla and blade of maxilla.
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Recorder
Crispina B. Binohlan
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Migration

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Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).
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Crispina B. Binohlan
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Morphology

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Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 43 - 45
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Crispina B. Binohlan
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Biology

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Occurs in rivers, reaching at least 650 km up the Irrawaddy, perhaps more. More data needed.
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Crispina B. Binohlan
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Importance

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fisheries: subsistence fisheries
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Recorder
Crispina B. Binohlan
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