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).
Trophic Strategy
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Most abundant fish in upper estuary in Ariake Bay (Ref. 57032).
- Recorder
- Grace Tolentino Pablico
Biology
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Inhabits sandy and muddy bottoms in bays (Ref. 43239). The life span of this species is one year: fast growing before its reproductive period, with adults measuring within 30-40 cm and 100-400 g, it gets thinner towards the end of its life. It feeds on shrimps, fish and crabs. Female individuals carries about 60,000 eggs (ellipsoidal in shape, 1.97-1.42 mm average diameter) with some lobes of transparent membrane projecting from its end (Ref. 81825).
