| fecundity of the hypostomus affinis (siluriformes, loricariidae) in the lajes reservoir, rio de janeiro, brazil. | the armored catfish hypostomus affinis is a widespread loricariidae fish in the lajes reservoir (22 degrees 42'-22 degrees 50' s; 43 degrees 53'-44 degrees 05' w), the largest lentic environment in the rio de janeiro state, but little is known about their reproductive biology. one hundred and twenty five females, captured from january 1996 to december 1997, were used to assess ovarian development (29 were used to determine fecundity). the oocyte distribution by size-diameter classes revealed the ... | 2002 | 12298245 |