Length–weight relations were estimated for 24 fish species sampled from the Hirakud Reservoir (Odisha State, India): Salmostoma bacaila (Hamilton, 1822); Salmophasia phulo (Hamilton, 1822); Labeo rohita (Hamilton, 1822); Labeo bata (Hamilton, 1822); Cirrhinus reba (Hamilton, 1822); Labeo calbasu (Hamilton, 1822); Puntius sophore (Hamilton, 1822); Puntius chola (Hamilton, 1822); Pethia ticto (Hamilton, 1822); Systomus sarana (Hamilton, 1822); Pethia phutunio (Hamilton, 1822); Osteobrama cotio (Hamilton, 1822); Amblypharyngodon mola (Hamilton, 1822); Rasbora rasbora (Hamilton, 1822); Parambassis ranga (Hamilton, 1822); Parambassis lala (Hamilton, 1822); Channa punctata (Bloch, 1793); Macrognathus pancalus (Hamilton, 1822); Notopterus notopterus (Pallas, 1769); Chanda nama (Hamilton, 1822); Xenentodon cancila (Hamilton, 1822); Glossogobius giuris (Hamilton, 1822); Ompok bimaculatus (Bloch, 1794); Gudusia chapra (Hamilton, 1822). They represented 10 families: Cyprinidae (14 species), Ambassidae (2 species), Channidae, Mastacembelidae, Notopteridae, Centropomidae, Belonidae, Gobiidae, Siluridae, and Clupeidae (1 species each). The b values ranged from 2.62 to 3.44. Nine of the species displayed isometric growth (b = 3), seven species negative allometric growth (b < 3), and eight species represented positive allometric growth (b < 3). New maximum lengths are provided for two species.

Length–weight relations, Hirakud reservoir, Cyprinidae, Ambassidae, Channidae