Fish Reasearch

Amount of Fish per Aquaponic Pond

There is a set length of Fish you can have, per so much surface area of water.  Without going into that too much today; basically you measure your fish, length-wise approximately and you have a certain total length, dependent on how much surface area of water you have.

This is of course to do with how much oxygen is getting into the water, which the fish need to breathe (fish with too little oxygen will gulp air constantly from the surface).

How to increase Oxygen content of water

In nature Oxygen naturally diffuses into water, it is also worth noting that cold water can hold more oxygen than hot.

Increases in Oxygen content of water in nature occur from waves in the sea, or in fast moving parts of rivers.  Basically when water is being churned up.

In a fish pond or tank, or in an Aquaponic setup; extra Oxygen can be created by a fish tank aerator, an artificial waterfall or from water pouring off the Aquaponic trays, from some height, into the Aquaponic ponds.

Most Profitable Fish

In the above pictures, there a a selection of fish an one axolotl, for sale in an Exeter pet shop.  All for over £15 each ( one type was on sale there for £50 each, all take about a year to grow and all are much smaller than a Trout.  So BASIC, small expensive fish = higher potential profits, dependent on markets and current demands.

Some ponds will be for Trout, for sure, but to Begin with; they will be for consumption on site, by me and others living and/or working there.

I think that if I am to make any real money on the fish side, to start with; then small expensive fish, is the way to go.

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