The silver catfish, Chrysichthys nigrodigitatus (Lacépède: ) is a highly valued food-fish included among the dominant commercial catches exploited in major. Abstract: The silver catfish, Chrysichthys nigrodigitatus (Lacépède: ) is a highly valued food-fish included among the dominant commercial catches. SpeciesChrysichthys nigrodigitatusBagrid catfish. ADW Pocket Guides on the iOS App Store! The Animal Diversity Web team is excited to announce ADW.

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Indeed, in lake Ahozon, the presence of marginal wetlands associated with aquatic vegetation could have boosted the proliferation of aquatic insects that were available for C. Lengths at first sexual maturity L 50 of a Chrysichthys nigrodigitatus males L Cambridge University Press, UK. In general, the coefficient of emptiness Ce varied seasonally and ontogenetically and ranged between 0 and The eco-morphological patterns depicted along with dietary analysis showed that C.

Standard Length SL frequency histogram established for the whole population showed unimodal size distributions Fig. Senegal to Cabinda, Angola Ref.

Chrysichthys – Wikipedia

Thus, new findings on species maturation lengths, spawning seasons, fecundity, abundances and recruitment in a sand-dragged man-made lake, may be arrived at. Fisheries ecologists have been conducted studies on feeding ecology to evaluate the dietary composition and the food habits of a fish species nigrodiggitatus order to provide useful information for fisheries management, aquaculture valorization and habitat protection. To evaluate the eco-morphological patterns of C. These findings evidenced the production of multiple cohorts at every spawning season in Lake Ahozon and hence, showed nigrodigitatuss C.


Average pH was 7. The trophic plasticity behavior displayed by the species and the wide spectrum of preys ingested, led to active spawning, high recruitment and colonization that indicated the successful establishment of C.

More data is needed on temporal variations of ovarian structure and prey availability to confirm this adaptive behavior.

Ecology and fish biodiversity of man-made lakes of southern benin West Africa: Chrysichthys nigrodigitatus individuals were then dissected and the digestive tract was removed and its length was measured as the distance from the distal end to the anus Bagridae from Jamieson River, Nigeria.

The current study investigated the feeding ecology of C. Reported from Mauritania Ref. Fecundity and spawning frequency of Chrysichthys furcatus Gunther, Osteichthyes: Bagridae in the Cross River, Nigeria. Also, depths ranged between Aggregated algae ingested by C.

Chrysichthys nigrodigitatus individuals were sorted by habitat and by sampling period Inversely, like the coexisting tilapine cichlid S. Chrysichthys nigrodigitatus was a prominent species in Lake Ahozon and numerically made about The region experiences a sub-equatorial climate with two wet seasons April-July, mid-September-October with a peak usually recorded in June and two dry seasons, a major one from December-March and the minor one from mid-August to mid-September Claroteidae and its establishment in the artificial lake of Ahozon.

Classification Kingdom Animalia animals Animalia: These results suggested that the man-made Lake Ahozon was a suitable medium-environment for the proliferation of C. Statistiques des peches continentales annee Perciformes from a sand-dragged man-made lake of Southern Benin, West Africa. These differences recorded in the diet composition could be partially attributed to the period of sampling between study regions.


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Journal of Fisheries and Aquatic Science Volume 12 3: Cast nets, gill nets and hooks were used in the “Open water”. Add your observation in Fish Watcher Native range All suitable habitat This map was computer-generated and has not yet been reviewed. The reproductive traits depicted in this special medium-environment are useful for fisheries management, aquaculture and species conservation.

Inversely, the volumetric proportion of aquatic insects, seeds and detritus were positively correlated with SL and GL indicating that the proportional consumptions of these three prey items increased with SL and GL Table 6.

Human uses

We are grateful to the numerous reviewers for their thorough peer-review of this manuscript. In December,about live individuals 15 genitors and figerlings of C. The Freshwater Fish of Tropical Africa. In the Benin water bodies, Chrysichthys Pisces: As the fish grows, the digestive system becomes well-developed and digestive enzyme secretions are initiated.

Perciformes from a man-made lake, Southern Benin, West Africa: Aquatic insects were dominated by diptera larvae and nymphs