Length–weight relationships and biological data on guayana pike‐conger C ynoponticus savanna ( B ancroft, 1831)

Summary This study presents the first references available for C ynoponticus savanna length–weight relationships ( LWR ) as well as other biological information, based on its unique population in the S outh A tlantic O cean, specifically, T odos os S antos B ay, on the B razilian central coast. A total of 464 individuals were obtained from artisanal fishing landings between July 2012 and June 2013. Total lengths ranged from 14.5 to 139.6 cm. The length‐weight relationship was BW = 0.716 TL 3.31 . Length at first maturity ( L m ) was 48.9 cm. Reproduction began gradually in May, reaching a peak around December, with most individuals completing reproduction by January. The gonadosomatic index ( GSI ) was highest in January ( GSI   = 0.21) and lowest in March ( GSI   = 0.024). The male index ( GSI  = 0.073) was lower than in females ( GSI   = 0.10) (P < 0.01). This study presents the first population data for C . savanna , which is under threat due to overfishing and habitat loss.