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Freshwater Fish Nutrition Calculators and Tools

These calculators work out what and how much to feed a freshwater fish: daily calories, portion sizes, feeding schedules, water needs and which foods to keep away from it. All 2 are free, quick and based on freshwater fish reference data.

Nutrition2 tools

All 2 freshwater fish nutrition tools

Freshwater Fish Nutrition tools: what they help with

These calculators work out what and how much to feed a freshwater fish: daily calories, portion sizes, feeding schedules, water needs and which foods to keep away from it. Diet is the single biggest thing most owners control. Getting portions right prevents obesity and the many problems that come with it in a freshwater fish.

What to know about nutrition and feeding for freshwater fish

Freshwater fish are omnivores, which shapes what you feed and how much.

Freshwater Fish quick facts

Reference values for freshwater fish from the species data behind this tool.
MeasureFreshwater Fish
Typical lifespan3–10 years
DietOmnivore
Mature atAbout 9 months
Clutch size300–500 eggs

A practical tip

Weigh food rather than using a cup or scoop. Measuring by volume is one of the most common reasons pets are overfed.

Other freshwater fish topics

Freshwater fish care rarely sits in one box. You may also find these useful: freshwater fish age tools, freshwater fish behavior tools, freshwater fish breeding tools and freshwater fish cost tools. Or see every freshwater fish tool in one place.

Nutrition tools for other pets

The same kind of tool exists for other species, each using that animal's own reference data: goldfish nutrition, betta fish nutrition, guppy nutrition and molly nutrition.

Frequently asked questions

How much should I feed my freshwater fish?

It depends on body weight, age and activity. The freshwater fish food and calorie calculators give a daily starting amount, which you then adjust based on body condition.

Which freshwater fish nutrition tool should I use first?

Most people start with the Freshwater Fish Feeding Schedule Planner, the most used tool in this group. If your question is more specific, the list above describes what each of the 2 tools does.

How accurate are the results?

They are estimates based on published reference data for freshwater fish, and each tool lists its sources. Individual animals vary, so treat results as a guide and check health decisions with your vet.