Short answer: set the daily feed as a percentage of the total weight of fish in the pond, use a higher percentage for small fish and a lower one for large fish, cut back when the water is cold, and split it into two or more feeds. Then watch the fish: stop feeding as soon as they stop eating.
Feed is the biggest running cost on most fish farms in Punjab, whether you grow rohu, mori and thaila together or tilapia on its own. At Vital Feeds (Private) Limited we see the same pattern on many farms: the fish are not short of feed, they are being given the wrong amount at the wrong time. This guide gives you a simple routine you can follow every week.
How do I calculate how much to feed my fish?
The daily amount of feed is normally written as a percentage of the total weight of fish (the biomass) in the pond. The Food and Agriculture Organization calls this the daily feeding rate in its FAO training manual on fish feed and feeding. So the first job is to estimate biomass:
Biomass = estimated number of fish × average weight per fish
Daily feed = biomass × feeding rate
To get the average weight, net a sample of fish, weigh them together, and divide by the number caught. Take the sample from more than one spot in the pond so you do not only catch the fastest or slowest fish. Count your losses too: if many fish have died since stocking, the real number in the pond is lower than the number you put in.
How often should I check the weight of my fish?
FAO advises checking the fish biomass every 15 to 30 days and recalculating the daily ration. Fish grow all the time, so a feeding amount that was right last month is wrong today. If you never re-weigh, you are almost certainly underfeeding fast-growing fish and overfeeding slow ones.
Why do small fish need a higher feeding rate?
Small fish eat a much higher percentage of their body weight than large fish. FAO notes that the daily feeding rate depends on the species and the size of the fish, with smaller fish needing a higher percentage. A fingerling may take several percent of its weight in a day, while a large grow-out fish takes a much smaller percentage — even though the total amount of feed in kilograms keeps going up as the fish get bigger.
Small fish also do better with more frequent, smaller meals. As the fish grow, you can feed fewer times a day, but the total amount still rises with biomass.
How does water temperature change the feeding rate?
Fish are cold-blooded. Their appetite and digestion follow the water temperature. When the water cools in winter, giving the same amount does not feed the fish — it sinks, rots and fouls the pond. FAO shows that the feeding rate for carp rises as water warms towards the best range and falls as it cools.
| Water condition | What happens | Feeding response |
|---|---|---|
| Warm, within normal range | Good appetite and digestion | Feed to normal rate |
| Cooling water | Appetite and digestion slow | Reduce quantity and frequency |
| Cold water | Feed intake very low | Feed sparingly or not at all |
| Low oxygen (fish gulping at surface) | Fish under stress | Do not feed until oxygen recovers |
In the hot months of a Punjab summer, oxygen can also drop at night and early morning. On such days, feed later in the morning once the fish are active, and never feed fish that are gasping at the surface.
How much feed can I give in one feeding?
Split the daily amount into two or more feeds at fixed spots and fixed times, so the fish learn where and when to come. FAO advises that in any one feeding, no more than 3 percent of the total fish weight should be given. If your daily amount is larger than that, add another feed rather than making one feed bigger.
A simple fish pond feeding schedule: two or more meals a day in warm months, fewer and smaller meals as the water cools, and very little when the water is cold.
What is the rule that overrides the calculation?
Whatever the calculation says, feed to the response of the fish. With floating pellets you can watch this directly: spread a portion, wait, keep feeding while fish are actively rising, and stop as soon as the response slows. This is the single biggest advantage of a floating pellet and the main reason to use one.
FAO also suggests checking for leftover feed two to three hours after feeding. If nothing is left, you can raise the amount a little. If a lot is left, cut it back.
What are the signs I am overfeeding my pond?
- Pellets still floating an hour or more after feeding.
- Water turning green quickly, or developing a strong smell.
- Fish gulping at the surface in early morning — a sign of low oxygen, often driven by rotting feed.
- Feed use rising while growth does not.
Wasted feed is also a storage issue: damp or mouldy pellets are refused by fish. See our guide on how to store animal feed on the farm.
What daily feeding routine should I follow?
- Estimate biomass every two to four weeks from a netted sample.
- Set a starting daily amount from biomass and fish size.
- Split it into two or more feeds at fixed spots and fixed times.
- Cut back whenever the water cools, oxygen is low, or the response slows.
- Check for leftover feed a few hours later and adjust.
- Write down what you feed every day. Without records, feed conversion in a pond is pure guesswork.
The same idea of measuring feed against growth is how poultry farmers cut costs too — see how to reduce FCR in broilers. For pond fish, the right feed and the right amount together decide your profit. Browse our commercial fish feed for ponds, or find a stockist on our dealers page.
Written by Waqas Rafiq, CEO, Vital Feeds (Private) Limited.
See our poultry feed, cattle and dairy feed and fish feed, or message the mill on WhatsApp (UAN 0311 1555136) to plan delivery sizes that suit your farm.