CATFISH FARMING: LEARN HOW TO PRODUCE FINGERLINGS

Catfish farming is one of striving agribusinesses nowadays. It is a flexible agribusiness business that can be virtually done anywhere provided there is space however small.  African Catfish, Clarias gariepinus, is a very resilient and prolific fresh water fish. Other catfish species are Clarias batrachus; Clarias ictalurus; Clarias silurus etc. Many farmers in sub-Saharan Africa have successfully raised large tons of adult catfish for market purpose from fingerlings, but, only few knows how to produce fingerlings.
It is important to know how to produce catfish fingerlings. Producing fingerlings will reduce cost of production and provides assurance of getting better output. Fingerlings can be raised up to juvenile stage before stocking. You can also be a good source of quality and healthy catfish seeds (fingerlings or juvenile) for other catfish farmers from your hatchery.
The quality of output you will get will depend on the quality of breeder catfish, breeding materials  and of course the method used.
There are simple, medium and re-circulatory system hatchery. However, before setting up any hatchery, a careful economic planning should be done. This may not be as complicated as you think. A good way to start is to list the income and expenses you expect. First, consider the income your hatchery operation will generate. Generally this means estimating the amount of fingerlings or juveniles you will produce and the price you will receive for them. Next, make a list of the expendable items you will need to buy to produce your fingerlings or juveniles. This will include feed, labour, fuel, electricity, equipment, repair, etc. These are your variable costs. It is important to make a list of costs for everything associated with machinery. These are your fixed costs. Examples include wells, pumps, feed bins, Plastic tanks, buildings, etc.
Fingerlings production requires artificial breeding of catfish, hence, before embarking on breeding exercise, the following equipment/materials should be readily available; Hatchery Facility; Mature Broodstock (300-800 grams); Weighing scale; a pair pincer; Calibrated jug; Thermometer; Mortar and Pestle; Hack saw; Clean water supply; Plastic bowls; hatchery tanks and Spoon; Distilled water; Salt; Hormones (Ovaprim; Ovatid); Dissecting kit; Syringes and needles; Sharp knife/Knife; Kakaban (Egg net) or Substrate; Artemia.
It is important to sterilize all equipment to be used with salt solution to avoid contamination. Breeding activities starts with selection of healthy and matured broodstock (Male & Female spawner/fish), 8 – 12 month of age is preferred, and this should be gotten from a reputable farm.
A female broodstock/fish has well distended, swollen abdomen from which ripe eggs can be obtained by slightly pressing the abdomen toward the genital papilla. Ripe eggs are uniform in size, while a Male broodstock/fish has a swollen, sometimes reddish coloured genital papilla. Female broodstock is injected with synthetic hormones (ovaprim) with a dose of 0.5 ml/kg of body weight. This injection is administered intra-muscularly at the dorsal muscle in the evening hours. Cover the catfish head with a small wet towel to avoid struggling. Ovulation of eggs will start after the hormonal administration. Pituitary gland extract mixed with saline solution (9g salt in 1 litre water) from catfish or carp can also be used.
Male broodstock do not necessarily need hormonal administration, however research by Oguntuase & Adebayo (2014) revealed that, Ovaprim and Ovatide (0.3 ml/kg) significantly increased volume of milt, motility duration and percentage. The efficacy of these synthetic hormones was evident on the reproductive performance as tested on the female C. gariepinus. The use of these hormones in male fish is a means of boosting reproductive performance and ensuring good and viable fish seeds.
The injected female is returned to water.
The speed of ovulation depends on the water temperature, the higher the temperature, the quicker the catfish ovulate.
Afterwards, the hatching tanks using flow through system is prepared by filling it with fresh water and the egg tray/net (kakaban) is gently placed on the hatching tank. Stripping of the female broodstock should be done after latency period of 7 – 12 hours and this is done by gently pressing the abdomen with a thumb from the pectoral fin towards the genital papilla. Ovulated eggs will flow out easily in a thick jet from the genital vent if the females responded well to the hormonal treatment. The ovulated eggs are more or less transparent, flattened and a gram of egg contains approximately 600 – 1000 eggs. The eggs are allowed to fall freely into a clean and dry bowl.
The male catfish cannot be stripped and consequently the sperm can only be obtained by sacrificing a male. The male is killed and thoroughly dried after which the testis is removed and cut with a scissors. The milt is washed out with saline solution (0.9% sodium chloride) unto the egg mass.
Both sperm and eggs remain in their dormant state until they come in contact with fresh water. Then, the eggs are fertilized by adding about the same volume of clean water. The water and egg mass are mixed by gently shaking of the bowl. Eggs must be stirred continuously until they are placed in the hatching tanks as the eggs become sticky and without stirring will stick together into one clump.
Fertilization will take place in about 60 seconds, then, the sperm would have lost its activity, the fertilized eggs are then ready for incubation in hatching tanks. The fertilized eggs are uniformly spread on kakaban/egg net (mesh size – 1 mm) placed on hatching tank.
Flow through system provided below the hatching tank will help maintain optimum oxygen level, if there is no flow through system, ensure, water is renewed in order to provide oxygen. Substrates (with floating ability, e.g strands of sack bundled together, etc.) can also be used in absence of egg net. The substrates are dipped into water containing the eggs and the eggs will stick onto the substrates. They are then transferred into tanks, happa nets or basins, which ever incubation container is available. The incubation of fertilized eggs is for minimum of 24 hours and maximum of 48 hours. A very high temperature between 27oC & 30oC favours quick hatching.
Hatchlings tend to stay in dark places and should not be exposed to direct sunlight; therefore, it is important to cover the incubator container with black tarpaulin. The hatched fries (hatchlings) can survive on egg yolk for 3 days without feed. The fries should be separated from the hatching tank and put into a clean tank to avoid fungal infection and mortality, afterward, the fries shall be fed with Artemia, three times a day until they develop into fingerlings.
 Drop your comment below!!!

50 thoughts on “CATFISH FARMING: LEARN HOW TO PRODUCE FINGERLINGS

  1. Olayinka says:

    Please, I noticed my catfish fries are not having a rapid growth and I’m really concerned. Want to know if this probably indicate that I’m feeding them less. And I’ll like if you can help me on how to feed them.

  2. Daron says:

    Thank you for another informative website. Where else could I get that type of information written in such a perfect way? I have a project that I’m just now working on, and I have been on the look out for such information.

  3. Ewaoluwayemisi says:

    Please I need contacts and locations of where I can buy catfish at a cheaper rate to process for smoking and packaging. Thank you.

  4. Lanre says:

    Thanks quite informative. You talked about costing before commencement. Can you please provide a detailed description of things needed to produce 100000 fingerlings. I mean engineering to everything including the size of plot required for this. I do not mind paying for the service. Thank you
    Lanre

  5. stephen says:

    Sir I was told that the brain of a male catfish produces the sperm and I don’t understand the aspect of killing and drying the fish before getting the sperm out it was said that is kill the man and take the sperm and mix it with the eggs and adding salt

  6. Yusuf says:

    Hello.
    You talked about washing the milt with a saline solution, those that mean the quantity of this saline solution will not affect the fertility process in any way? Or it is only required in little quantity only to ensure uniformity upon striped eggs.
    Thanks.. i hope to get a reply.

    • Adedapo B.Kingsley says:

      Please, how do you put me through on cartfish hatching and where to get good broodstock in Ibadan.Thanks for the good and rapid response Sir.

  7. Elias Wills says:

    Greetings Ayodele
    I just run into one of post about 5 minutes ago (CATFISH FARMING …..(LEARN HOW TO PRODUCE FINGERLINGS)
    what really moved me to send you this message is the picture of hatchery that i saw and i don’t even no if it is plastic vast tanks or concrete tanks,but my mind Say’s you are the person that i have been looking for on how to build my recycling fingerlings ponds and if possible with modern monitoring equipment in it.

  8. Aladefarmz says:

    for purchase of fingerlings,juvenile, post juvenile ,jumbo,smoking size and broodstocks should contact @07066663147 base in Osogbo but delivery nationwide

  9. Clenor Fon says:

    Please can I know hw to reproduce fingerlings in a local way ; that means from the incubator straight to the pond . Pls should be expecting and answer # thanks#

  10. Lawson says:

    I’m impressed about your write-up. It’s informative indeed.
    Sir, I want to know how to remove the newly hatched fries and put in a clean water without harming them.
    Thanks.

  11. Emola Adeola says:

    It a good idea and am interested in in rearing a fish and have done the pond but I intended learning how to hatch the fingerling

  12. dada olutunde akin says:

    Hi Sir I based in Ibadan, I have no job and I wish to start one 👌 can you teach me how to hatch fingerlings … The process of hatching and the injection given… I would be very grateful to you Sir

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