In my journey as a catfish farming business owner, I’ve seen farms rise and fall. I’ve talked to fellow farmers, learnt from my own mistakes, and discovered that while everyone has their own approach, some rules make the difference between profit and frustration.

If you’re doing this for fun, you can skip these rules. But if your goal is to build a profitable, sustainable catfish business, whether in Nigeria, Ghana, the U.S., or anywhere in the world, then pay attention to this blog post.

Here are seven unspoken rules that can help you succeed in the catfish farming business.

Rule #1: It’s Not About Big Fishes, It’s About Big Profits

Many new farmers think, “The bigger the fish, the bigger the money.” Not necessarily. What truly matters is the profit per cycle and how much you make after deducting costs.

For example, if you grow catfish for six months and end up barely breaking even, then what’s the point? Instead of just focusing on fish size, calculate your cost-to-profit ratio and optimise it.

The goal isn’t just to grow your catfish; it’s to grow profit, which will lead to a profitable catfish farming business.

Rule #2: Your Water Quality is More Important Than Your Feed

Catfish Cement Pond View

You can buy the best feed in the world, but if your water is bad, your fish won’t grow well. Dirty, stagnant, or polluted water stunts growth, causes diseases, and increases mortality rates.

If your pond water is:

• Cloudy or foamy: Your fish are suffocating.
• Has a strong smell: Waste buildup is causing ammonia toxicity.
• Too hot or too cold: It affects their metabolism and feeding.

I’ve seen farms that spent millions on expensive feed but lost money because their water management was poor. I have also had experience with this. So, fix your water, and you fix your fish growth.

Best Practices:

• Change your water regularly (for artificial ponds).
• Use flow-through systems where fresh water enters and exits continuously.
• If using an earthen pond, ensure proper drainage and natural filtration.

Always remember that Good water = Healthy fish = Bigger profits.

Rule #3: Fingerlings Can Determine Your Profit Before You Even Start

Not all catfish juveniles (fingerlings) are created equal. Buying from random or cheap sources can lead to slow-growing or disease-prone fish.

I learnt this the hard way when we bought juveniles from a nearby pond, only to realise weeks later that they were poor-quality hybrids that didn’t grow and had developed sickness from the moment they were in their pond.

Buying the wrong stock can lead to:
High mortality rates: Weak fingerlings won’t survive past the first month.
Slow growth: Some take twice the normal time to reach table size.
Uneven sizes: Some fish will grow, others will remain tiny, affecting your market price.

How to choose the best fingerlings:
Buy from a reputable hatchery (don’t just pick the cheapest).
Look for active, uniform-sized fish (weak ones won’t survive).
Test a small batch before buying in bulk.
 

The saying “garbage in, garbage out” applies to catfish farming too. Good fish stock = Good profits.

Rule #4: Your Feeding Schedule Determines Your Profit Margin

One of the biggest myths in catfish farming is that feeding them more will result in faster growth. That’s only true if you’re doing it right.

You want to understand these two realities:
Underfeeding leads to stunted growth, resulting in smaller fish and lower market value.
Overfeeding leads to wasted feed, increased costs, dirty water, and disease.

You might wonder what the best advice is. It’s called Balance.

For the first 2 months, feed them twice daily (morning and evening) for rapid growth.
After 2 months, reduce feeding to once per day to control costs while maintaining growth.
In the final month before harvest, focus on high-protein feeds for the best size-to-cost ratio.

And here’s a tip: Always feed your fish at the same time daily. They get used to the routine, making them more responsive and efficient eaters. 

Rule #5: Local Feeds Can Be Better Than Imported Feeds (If You Get the Formula Right)

My Catfish Responding to Feeding Time

Many farmers assume that imported feed is the only way to get fast-growing fish. That’s not true! Properly formulated local feed can be just as effective at half the cost.

Although, the problem is that most farmers use randomly mixed feed ingredients without understanding the right protein-to-energy balance. Too much fish meal? Wasted cost. Too little protein? Slow growth.

Best Solution: If using local feed, work with an expert to get the right mix or observe your fish’s eating habits, good feed should be consumed quickly and completely.

Rule #6: Stocking Density Can Make or Break Your Business

It’s tempting to overcrowd your ponds, thinking, “The more fish I have, the more money I’ll make.” But that’s a rookie mistake when you are running Catfish Farming Business.

Overstocking leads to:

• Slow growth, where fishes compete for oxygen and space, stunting their growth.
  
• High mortality rate, where a single disease outbreak can wipe out a densely packed pond.
  
• Poor feed conversion, when more fish, doesn’t mean more profit if they aren’t growing fast enough.
  

A good rule of thumb? Stick to 5-8 fish per square meter in an earthen pond and 3-5 in a concrete pond. It’s better to have fewer, well-fed, and fast-growing fish than thousands that struggle to grow.

Rule #7: Never Trust Just One Buyer for Your Sales

One of the biggest mistakes I see new catfish farmers make is relying on a single buyer, usually a big restaurant, market woman, or bulk buyer. It might seem convenient, but it can be a risky trap.

Why?
If they delay payment, you’re stuck.
If they offer a low price, you have no bargaining power.
If they suddenly stop buying, you’re left with unsold fish and high feeding costs.

The solution? Have multiple selling channels.

• Local market sales: Build relationships with different market traders so you’re not stuck with one.
• Direct to consumer: Sell to individuals via WhatsApp, Instagram, or referrals.

Dried Fish for a customer 

• Processing option: Offer smoked/dried fish to increase shelf life and profit margins.
• Restaurants and hotels: Have contracts with multiple buyers, not just one.

A farmer with options is a farmer in control. Don’t let one buyer dictate your business.