STUDIES ON THE BIOLOGY OF SOME FRESHWATER FISHES PART VII. HETEROPNEUSTES FOSSILIS (BLOCH)
2011
Bhatt, V S
In Heteropneuites fossilis length frequency distribution gave no indication of yearclasses. Only one quarter gave some evidence of 4 modes indicating about four years oflife span of the fish.Both sexes mature when 12 to 13 cm in length. The females occur two times morein population than the males and the former grows longer than the latter. The twosexes can be distinguished externally by the presence of a genital papilla in the males.The rise and fall in the condition factor 'K' seem more correlated with the feedingrhythm of the fish than with the seasonal changes in gonad weight.The flsh mainly Feeds on molluscs, cypris, chironomid larvae, small fishes, copepods,weeds, sand and mud, debris, algae etc. The feeding intensity is maximum duringmonsoon and wintijr months and minimum in summer. Younger fishes are mainlyplankton feeders
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