Observations on the distribution and biology of a few bathypelagic fishes from the South-West Coast of India

This paper dads with the biology, distribution and abundance of a few bathypelagio fw viz. Psenopsis obscura Hecldrich, Trlchiurus auriga Klunzinger, Chlorophthalmus agassizi Bonaparte, Neoepinnuh orientalis Oilohrilt and van Bonde and Ariomma indica (Day, based on the oolldon mado by FORV Sagar Sampada. In the he bd~bstwscdl latitudes 8"30' N to 1039' N and longitude 7595' E to 763TE, off Ponnani to Triv-at depthsbeyond 300 m, thm bathypelagio fishes conrtituted 98% of the tobltrawl catoh of 36 t of the total fish oatch: Psenopsis obscura 46.37% Trichiurus auriga 13.46% Chlorophthalmus spp. 18.2O/6, N. oriantalis 1.8%, and A. indica 0.5% The rize of C. agassizi ranged from 150 to 230 mm.C. bicornia from 213 to 395 nun, Psenopsis obscura from 141 to 215 mm, T. auriga fmm215 to 395 mm adA. indlca fiom 105 to 171 mm. The length-weight relationship of these species wan also worked out