length–length and length-weight relationships and condition factor of nine freshwater fish species of nageshwari, bangladesh

the research carried out the length-length relationships (llr), length-weight relationship (lwr) and condition factor of nine freshwater small indigenous species viz. g. giuris, e . danricus, m . pancalus , l . guntea, c. fasciatus, p. sophore, h .  fossilis, c .   punctatus and m. cavasius from the waterbodies of nageshwari, bangladesh. relationships among different body lenght parameters of each species were found highly significant with all “r” values being >0.900. lwrs were obtained on the form of tw = atl b . the “b” values range from 2.65-3.03. the parameter “b” of the length-weight relationship equation showed higher value (>3) only for g.  giuris and c. fasciatus . rest of the specimens showed lower value (<3) but close to the value of 3 and relationships were found highly significant with all “r” values being >9.00 . the fulton’s condition factors showed positive growth tendency for five specimens viz. g. giuris, c. fasciatus, p. sophore, c. punctatus, m. cavasius; and negative tendency for four specimens viz. e . danricus, m . pancalus , l . guntea , and h .  fossilis .