Can fish survive without plants?

I actually already know they can survive because I put mines into my huge tropical fish aquarium and its growing beautifully. I think it's getting its nutrients from fish poo and decomposed uneaten fish food. I just want to know If they normally are...

All the males started attacking this one female fish and i thought WOW major bullying (rape) . But then it got proper agressive so i did my research and found out it was breeding. I also found that that when she was left alone she settled near the rubber...

hello i am new to pearl danio fish so therefore i have some questions to ask you. 1) This is how my fish look like http://www.aboutfishonline.com/articles/pearl-danio.html When i searched for pearl danios online they were colorful why is this not the...

1st question:so yesterday i bought 21 guppy fish ,and today 1 died...is it normal?the others are ok.i have everything in the tank heater,filter ,oxygen...and the tank is very big.so why did it die?did it have a problem before i bough it? second question...

I have seen a lot in cartoons a gold fish swimming in a bowl with rocks and fake plants on the bottom but my family and I want to buy 3 goldfish and put them in a 12" by 12" glass bowl with no filter at all. Can they survive without a filter...

My sister got a fabulous betta bowl for her birthday. It's really pretty, but only looks like is holds about a gallon of water. There is no way that any fish, betta include, can happily survive in a tank that small. Especially without a filter. Still...