Can fish survive without plants?

Pearl danio breeding & more information about the fish?

• 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 case for my fish. Could it be because they are young. Also is there any way i can sex the fish i mean if they had colours it would be easier but they don't. It is mostly silvery so how can i sex them. 2) I wanted to breed my fish i think i have 2 males and a one is bigger than the others so i think it is a female. My tank is 40 litres and has a lot of fake plants. It also has a filter and a thermostat. Can you tell me how i can breed them. i have a smaller tank about 7 litres which can be used however it doesn't have a filter or a thermostat will that be a problem? . i read that if you but a male and a female in a tank for a while 4-6 days they will spawn. can you please help me out and tell me the best way to breed them. 3) can the pearl danios live in a pond? i mean can they survive without a thermostat or a filter? 4) if they do spawn what should i do should i move the eggs as i heard they eat it. i feed the fishes 2 times a day with dried brine shrimps which they seem to like a lot. my tank has marbles at the bottom like stones but with colour. please try to answer my questions. any help would be appreciated thank you.

• Answer:

  1...they will get more color with maturity 2...they will breed on their own. You made need to separate babies so other fish don't eat them. Males are actually smaller than females in most cases and have a red hue when they mature 3... I would not raise in a pond unless temps remain the same all the time and stay above 65 degrees F. 4. They sell little side chambers you can attach right to the tank and keep them from other fish or get a second smaller tank set up