Fishkeeping Top Tip: How Many Fish?

when calculating how many fish you can put in a tank you calculate the projected auldt size of the fish not the current size, eg:if the 5cm fish you have is said to grow to 15cm then it needs to be in a tank with enough spare room to accomadate 15cm of fish

according to this guy fish dont grow!!!!!!!

Actually this man is wrong....1 goldfish to 40 ltrs off water is right, how can you tell how big a fantail will grow if you put a 1 inch fish in it wont stay that length all its life, so as i said each goldfish should have 40ltrs off water and he also did the measurements wrong too...you take the width...height....length off tank and divide it by 1000 and THAT is how you will see how many litres you have in your tank. Obviously i dont know about tropical fish as i have coldwater.

This is used as a "rule of thumb" but as so many people have said, there are so many flaws. If you have a tank under 30 gallons, don't put any fish in which grows to more than 2 inches. Remember to research into what size the fish will grow to, not just look at the size of the fish when you buy it.

dis is prbz buls**t so i will sue if my fish die !

look at all those spiders swimming!!!!

Where do I start on this one? 2" of small fish per gallon of water, maybe, but a 12" fish in a 6 gal tank... no way..