TBH, I think you could do with getting a bigger tank then 15 litres is very small and personally, I would only keep a male betta in there.

As I'm quite new about the goldfish,it's very useful information.Is this gravel cleaner really works?I don't have one but I might buy one then...Thanks!

A gravel cleaner is a good thing to have, it makes cleaning your tank a lot easier and saves a lot of hassle, highly recommended

Ok.Thanks.I will buy it a.s.a.p.

Great videos. It would be great for someone who is just starting out.

The gravel cleaner is awesome, great invention. It's hard getting used to it at first but after you get the hang of it, it makes life much easier so I really suggest you get one.

Good videos
Though i knew quite a bit, i learnt a bit

Can anyone helpI was given a fish tank - which I started setting up yesterday - the tank is 24 inches x 8 inches x 8 inches which gives a capacity of 5.5 gallons - but i have read on webpages in your link that you can one hold one fish per 10 gallons ie a half a fish.

What is recommneded?

Good that you checked it out first.

I'm afraid that tank is far too small for goldfish. 25L or 5.5G is too small for most fish but possibly a few long finned White Cloud Mountain Minnows or (with a heater) a Siamese Fighting Fish. Even then its really half the size it should be for the long term.

Other than that, perhaps planted up as a nice shrimp tank?

These articles were really useful to me! Thanks!

B

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As someone has already said guppies are tropical fish. You need to put a heater in your tank.