1.

STUDIES ON PRODUCTION PER BIOMASS OF THE NILE CATFISH SYNODONTIS SCHALL (BLOCH - SCHNEIDER) OF THE RIVER NILE , EGYPT

Pages 1-13
ADEL THARWAT
2.

THE POLLUTANT EFFECTS OF COPPER, ZINC AND LEAD ON THE HISTOLOGICAL PATTERNS OF FISH KIDNEY

Pages 15-41
Al-Zahaby A,S; Hemmaid K.Z; Carnal A.M,; Ghoncmy 0.1.
3.

PHYTOPL ANKTON BIOMASS AND ENVIRONMENTAL FACTORS IN THE NOZHA HYDRODROME, ALEXANDRIA, EGYPT.

Pages 65-80
Mohamed Essa; Mary Haroun
4.

PHYTOPLAN COMMUNITY STRUCTURE IN Mex Bay, Alexandria, Egypt

Pages 81-104
Samiha Gharib
5.

CROSS-BREEDING EXPERIMENTS ON SOME IMPORTANT FISHES OF FAMILY CICHLIDAE (GENUS OREOCHROMIS) AND EVALUATION OF THEIR HYBRIDS

Pages 43-61
Samiha Gharib
6.

ULTRASTRUCTURE OF SPERMATOZOA OF SPARUS AURATA, DIPLODUS VULGARIS AND UTHOGNATHUS MORMYRUS (FAMILY.SPARIDAE) IN THE EGYPTIAN MEDITERRANEAN WATERS.

Pages 105-117
SAMIA MOHARRAM
7.

OREOCHROMIS NILOTICUS AND OFFSPRINGS OF RED TILAPIA IN EGYPT: GENETIC PROSPECTIVE.

Pages 123-131
Ezzat Badawy
8.

THE USE OF ORGANIC MANURES IN POLYCLTURE SYSTEM FORTILAPIA, MULLET AND CARP

Pages 133-147
El-Sayed EI-Ebiary