Length-weight and length-length relationships are presented for four fish species from the estuaries of south Johore, Peninsular Malaysia. The values of the exponent b in the length-weight relationships (LWRs) W= aL b ranged from 2.97 to 3.44 and length-length relationships (LLRs) TL= aSL b ranged from 0.87 to 0.95. The application of these regressions should be limited to the observed length r...