STUDY ON FEEDING HABIT AND FEED SPECTRUM OF SMALLSCALE CROAKER Boesemania microlepis (Bleeker, 1858)

  • Van Viet Mai
Keywords: Boesemania microlepis, feeding habit, feed spectrum, smallscale croaker

Abstract

Smallscale croaker Boesemania microlepis (Bleeker, 1858) is a fish with good flesh and large commercial size, which has brought about high economic value. The study on feeding habit and feed spectrum of smallscale croaker was conducted from May 2016 to April 2017 on the Bassac river. The results showed that the mouth of this fish was wide with a slant mouth-incision and teeth on jaws developed well; Its gill rakers were sparse, short and hard. Its  esophagus was short with thick and folded wall; Its stomach was a long sac expanded posteriorly with a thick and folded wall; Pyloric caeca were 5-9 one-closed-end tubes attached to the connection between the stomach and intestine; Its intestine was short, folded with a thick wall. The relative length of gut (RLG) which was less than 1 indicated that Smallscale croaker was a carnivorous animal. Feed items in the stomach of the fish included crustaceans, small fish, molluscs and polychaetes.  There was a change in the feed spectrum at different stages of fish development. In particular, main preys of the young smallscale croaker were crustaceans while those of the mature one were small fish.

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Published
01-December-2017
How to Cite
1.
Mai V. STUDY ON FEEDING HABIT AND FEED SPECTRUM OF SMALLSCALE CROAKER Boesemania microlepis (Bleeker, 1858). journal [Internet]. 1Dec.2017 [cited 22Dec.2024];7(4):81-8. Available from: https://journal.tvu.edu.vn/tvujs_old/index.php/journal/article/view/49