how many fish are you supposed put in a 2.5 gallon aquarium?

Answer 1

There are lots of options for a 2.5 gallon tank, but you should limit it to no more than 4-6 fish in the very best case, probably 2 for most cases.

The most important thing to remember is the smaller the tank the harder it is to control. Water quality goes down hill fast, temperature can change fast, etc.

Suggestions for fish: pair of guppies, 4 neons or other very small tetras, a pair of sparkling gouramis would be nice, a betta, 2 dwarf cory cats or oto's along with a pair of guppies should do ok. A pair of any number of different species of Killifish would do well. With as many choices as there are, there is no reason a well maintained 2.5 gallon can't be a mini community tank. I have had one in my office for years and have had lots of fun with it.

All this assumes a good filter of course.

Best of luck with the micro tank...they can be lots of fun!

Answer 2

Fish For 2.5 Gallon Tank

Answer 3

I have a small desktop 2.5 gallon aquarium, with 2 cory catfish, 3 zebra tetras and 2 neon tetras. The fish are all healthy and the tank looks great. The catfish help keep the tank clean, but I still have to replace about half the water in the tank weekly to keep it clean. It's definitely more work having a tank this small, but it is cool to have on your desk...

Answer 4

A 2.5 gallon does not offer reasonable swimming space for any fish really - no matter what you put in there they'll have little to do but float around - I'm not sure I see the point of even keeping fish if they're going to be so constricted in movement. Even neons, which alone can fit, won't fit once you actually get enough to consider it a 'school' for these schooling fish. A betta is all I would recommend (and even still they thrive so much better in a real aquarium), or a critter aquarium with snail/shrimp as suggested above. A 10 or 15 gallon tank is not expensive to set up and doesn't take up much space - it would really be worth considering.

Goldfish are not suitable for bowls or small tanks - the fish will endup stunted in growth and lifespan. If you don't mind keeping your fish like that it's your prerogative, but stop recommending it to others.

Answer 5

cherry barbs are schooling fish, they need to be in schools no smaller than 6, a 20 gallon tank would be better suited for them as they are active little guys. feed fish what they can completly finish in 3 minutes once a day, or 1.5 minutes twice a day. if you have top feeding fish like swords and platies, with middle feeding fish like barbs, put part of the food on top as normal, and hold the rest in your fingers just under the watersurface and let it go, this will give every body a fair chance, but somefish are always gonna be faster and hungrier. you shouldnt have any issues with a too strong current with active fish like swordsmollies and barbs, unless you have a 40 gallon filter in there. fish dont actaully need a light in the hood to be comfortable, most aquarist want a light because tanks look pretty drab without it. If the room they are in is not lit during the day, a light in they hood should be used because fish do need a sense of day and night.

Answer 6

You could fit about 3-4 male guppies in there. You could also do a couple of danios,tetras, and a betta. I really hate the smart *** people who say 1 inch of fish per gallon it really gets on nerves. The truth is that they came out with that rule so you can buy a bigger tank. But I agree with the goldfish thing because they grow very big and produce a lot of waste.

Answer 7

it really depends on the fishes mass so in really the inch per gallon rule doesn;t really apply, so you have to use your discretion. if a fish is only like 3/4 an inch then you can keep like four, but if its two inches only one. try smaller like endlers, bumble bee gobies, an cholate gouramia.

Answer 8

A dwarf frog, a snail, and a comet goldfish are great all together in a 2.5 gallon tank. They all get a along and each of my kids have them in their rooms. They like the yellow snails best. Now, when the goldfish get too big, I give them to the petstore and trade for a smaller one. It's a great trade off.

Answer 9

The real question here is, what is your goal? Remember this is a chemistry experiment. Fish need water chemistry like we need oxygen chemistry. Visit a reputable fish store and talk through your plan. You will be amazed at all of the free information you receive. Good luck, and happy fish to you!

Answer 10

If it's goldfish, the answer is NONE. Goldfish require a minimum of 10 gallons of water per fish. If it's freshwater community fish, you can have 1 fish and that will allow a little room for growth. The rule is 1 inch per 1 gallon of water. Or you can have one betta. This tank isn't the best environment for any fish, but this is the best that you could do. If it were up to me, I would have all fishkeeping containers less than 10 gallons banned from sale. None less than 10 gallons are good for anything other than a torture device for fish.

Answer 11

It depends on how long you them to live. The more fishes you have in such a small tank the less oxigen in the water they will have. Not to mention that their waste will make it dirtier even faster. Can you imagine yourself condenmed to live your whole life in a place smaller than 10' square drinking your own pee? The answer will be just one and that would be a betta, due to its resistance to low oxigen. They are very resistant fishes and they do pretty well by themselves. Just don't put two of them together... unless you want to watch to some real fight!