This category hosts the key farmed species of fin-fish, shell fish, seaweed and others including those grown in various environments (e.g. warm water, cold water, freshwater, marine water)
Nov 06 2011
Unlike many fish species, the sperm can only be obtained by sacrificing a male of African catfish (Clarias gariepinus). Testis is dissected and cut into small pieces whereas the milt used in egg fertilization will be obtained through pressing pieces of the testis out. Note: We decided not to watermark the photos in order not to upset …
Permanent link to this article: https://fishconsult.org/?p=1187
Nov 05 2011
Determining the spawning readiness of African catfish (Clarias gariepinus) female is assessed based on the softness of female abdomen as shown one photo. Female ovulation could be judged based on the release of few eggs under slight pressure. Females are watched for ovulation and should be stripped and eggs fertilized. Note: We decided not to watermark the photos …
Permanent link to this article: https://fishconsult.org/?p=1178
Nov 05 2011
Pituitary gland extract is used in induced reproduction of African catfish (Clarias gariepinus). In order for the pituitary extract to be effective, donor fish should be sexually mature whether male or female. Also, the extraction of pituitary gland is preferred to be close to or within the spawning season. Note: We decided not to watermark …
Permanent link to this article: https://fishconsult.org/?p=1171
Nov 05 2011
This photo shows clearly the projection of the male genital papilla of African catfish (Clarias gariepinus)
Permanent link to this article: https://fishconsult.org/?p=1161
Nov 05 2011
The photo shows how female African catfish (Clarias gariepinus) is identified based on the genital papilla (watch the reddish color of the papilla).
Permanent link to this article: https://fishconsult.org/?p=1155
Nov 05 2011
During the spawning season of Nile tilapia (Oreochromis niloticus) develop reddish coloration as secondary sex characteristics. One of the attached photos shows clearly the male coloration during the spawning season while the second photo shows the color difference between male and female of Nile tilapia. Note: We decided not to watermark the photos in order not to upset …
Permanent link to this article: https://fishconsult.org/?p=1143
Nov 05 2011
In this model, Nile tilapia (Oreochromis niloticus) has been farmed in concrete tanks in agriculture farms where agricultural crops such as alfa alfa, tomatoes, potatoes, onions, etc., are cultivated. Such integrated farms are located in several locations including Al-Wafra, the location the attach picture shows. In order to facilitate draining, tanks are constructed abovr ground level. Water used in these …
Permanent link to this article: https://fishconsult.org/?p=1094
Nov 04 2011
This photos hows a type of egg incubators used in the commercial hatcheries of Nile tilapia, Oreochromis niloticus. Because of the high cost of imported incubators, these incubators are locally made in Egypt especially in the light of high demand. Note: We decided not to watermark the photos in order not to upset its clarity. …
Permanent link to this article: https://fishconsult.org/?p=1078
Nov 04 2011
These type of incubators for tilapia eggs are in use in medium size and commercial hatcheries (Egypt) Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This will be appreciated.
Permanent link to this article: https://fishconsult.org/?p=1072
Nov 03 2011
The fry of this species are collected from the Mediterranean Sea. In regard to growth rate, flathead grey mullet (Mugil cephalus) is showing highest growth rate among mullet species. Because of early collection of its fry in Egypt (September – December), it attains its market size with an average of 300-400 g in a single …
Permanent link to this article: https://fishconsult.org/?p=1061
