Lobejaw ilisha (Ilisha sirishae), first described by Seshagiri Rao, 1975 is a medium-sized fish in the family Pristigasteridae (order Clupeiformes). Adults typically reach 23.00 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 0 to 50 metres. It occurs in Tropical waters. It feeds on a mix of small fish and invertebrates as a mid-level predator. On the IUCN Red List, it is classified as Data Deficient.
Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 39 - 43. Body moderately slender, belly with 18 to 21 + 8 or 9, total usually 28 or 29 scutes. Eye large, lower jaw strongly projecting; shaft of maxilla with a distinct lobe or flange between hind tip of pre-maxilla and blade of maxilla. Dorsal fin origin near or before midpoint of body; anal origin a little behind dorsal fin base. Swim bladder without a posterior tube (or tubes).: fusiform / normal; Cross section: compressed.
Behavioural data for Lobejaw ilisha is currently being reviewed.
Marine; brackish; pelagic-neritic; anadromous ; depth range 0 - 50 m . Tropical; 31°N - 0°N, 46°E - 106°E West Pacific: Persian Gulf to the Bay of Bengal and Andaman coast of Thailand to the Gulf of Thailand (Songkhla Lake).
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