Striped catfish seed production larval and fry nursing

3 Striped catfish seed production larval and fry nursing 

The nursery ponds are located at on-stream and on-canal sites, to facilitate water exchange and ease of transportation of fry and fingerlings. The most popular pond shape is rectangular with a length to width ratio of three Tour, an area of 1000-5000 m and a water depth of 1.5-2 m. The inlet and outlet usually have a diameter of 20-40 cm depending on the pond size and are located at the opposite sides of the ponds. 

The water supplied into the pond must be of high quality (such as pH from 6.4 8.5, dissolved oxygen 3 mg/L, free of toxicants). The water is screened by a fine mesh to prevent the entrance of eggs and larvae of other undesirable organisms. The water in the pond is levelled up to 1 m and 

Larvae of the striped catfish are cannibalistic, usually causing low survival rate during the first days of the nursing period. Low stocking density and creation of natural food in rearing water are very important to reduce this mortality. 

The larvae of the striped catfish have to be transferred to rearing tanks or ponds within 24 h after hatching and fed five food (Fig. 16.13). Good quality 

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