Catfish Farming in Nigeria: A Practical Startup Guide

African catfish (Clarias gariepinus) is the backbone of Nigerian aquaculture for four practical reasons: it breathes atmospheric air, tolerates crowding that would kill tilapia, grows to table size in 5-6 months, and sells hot at every buka and roadside grill from Lagos to Kano.

Tilapia needs cleaner water, lower stocking, and a slower grow-out (7-9 months). If you have unreliable pumps, small land, or limited capital, catfish forgives more mistakes and pays faster. Most Nigerian smallholders start with catfish and only add tilapia once the water system and cashflow are steady.

Three pond types dominate in Nigeria, each with a different capital shape:

• Concrete tanks - highest upfront cost (₦ 250,000-400,000 per 3 x 2 x 1.2 m tank), but 15-20 years of life, easy to clean, and biosecurity is the best of the three. Standard choice in Lagos, Ibadan and PH backyards.
• Earthen ponds - cheapest per fish once dug, best growth rates because natural food supplements feed. Needs land you own and a water table you understand. Common in Ogun, Oyo and the Middle Belt.
• Tarpaulin (mobile) ponds - ₦ 60,000-120,000 for a 3 m round pond, lasts 3-5 years. Ideal for renters and first-timers testing the market before committing to concrete.

Whichever you pick, plan for a water exchange: 30-50% every 3-4 days once fish pass 300 g. Catfish tolerate dirty water but grow slowly in it, and slow growth kills your margin.

Below is a realistic 2026 Nigerian cost sheet for one 2,000-fish grow-out (juveniles to 1 kg table size, 5-6 months) using tarpaulin or concrete tanks.

• 2,000 juveniles (5-10 g): ₦ 80-120 each ≈ ₦ 200,000
• Feed (~3.2 tonnes floating + sinking): ₦ 22,000-28,000 per 15 kg bag ≈ ₦ 1,600,000
• Water, pumping, electricity/diesel: ₦ 120,000
• Vitamins, salt, disinfectant: ₦ 40,000
• Labour (one attendant, 6 months): ₦ 300,000

Total variable cost ≈ ₦ 2,260,000, or about ₦ 1,130 per fish before pond amortisation. At a farm-gate price of ₦ 1,500-1,800 per 1 kg fish and a realistic 85% survival, gross revenue lands around ₦ 2.55-3.06 million. Margin is real but thin - feed price swings decide the year.

Feed is 70-75% of your cost. The number that decides profit is FCR - kg of feed per kg of fish gained. Well-run Nigerian catfish farms hit FCR 1.1-1.3 on imported floating feed and 1.4-1.6 on local sinking feed. Anything above 1.8 usually means overfeeding, bad water, or wasted feed sinking uneaten.

• Nursery (5-50 g) - 45-48% protein, crumble.
• Grower (50-300 g) - 40-42% protein, 2 mm floating pellet.
• Finisher (300 g-1 kg) - 35-38% protein, 4-6 mm pellet.

Feed twice a day, watch the surface: if pellets are still floating after 10 minutes, cut the ration by 10%. Sample-weigh 20 fish every two weeks; growth that lags the curve usually points to water quality, not feed brand.

Most catfish losses in Nigeria come from water quality, not exotic disease. Ammonia spikes after heavy feeding, low dissolved oxygen at dawn, and pH drift below 6.5 will kill more fish in a week than any pathogen. Check dissolved oxygen and ammonia weekly with a cheap test kit.

• Bacterial infections (Aeromonas, Pseudomonas) - red patches, fin rot. Salt bath (5 g/L for 15 min) and improve water exchange before reaching for antibiotics.
• Fungal (Saprolegnia) - cotton-wool patches on skin. Usually a symptom of injury plus dirty water; treat the water first.
• Cannibalism - not a disease but the biggest silent loss. Grade fish by size every 3-4 weeks; jumbo fish will eat small ones.

A live 1 kg catfish in Nigeria sells for ₦ 1,500-1,800 farm-gate and ₦ 2,200-2,800 retail. Smoked catfish (eja kika) fetches ₦ 4,500-6,000 per kg and travels better - a common way for southern farmers to reach northern markets.

Three buyer channels matter: market women (fastest cash, lowest price), hotels and buka clusters (steady demand, weekly delivery), and smoking co-ops that buy live and add value. Line up at least two channels before you buy juveniles - a single buyer defaulting can sink a cycle.

Start with 500-1,000 juveniles in a tarpaulin pond, prove your water and feeding routine for one cycle, then scale to concrete once your FCR is under 1.4. Record every bag of feed and every fish sold from day one - FamRite handles this in ₦, GH₵, KSh or R alongside your health and mortality logs.