What should I do with the baby fish in my tank? How do I protect them? - The Planted Tank Forum
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 03-01-2016, 08:44 AM Thread Starter
Planted Tank Enthusiast
PTrader: (0/0%)
Join Date: Feb 2016
Posts: 595
What should I do with the baby fish in my tank? How do I protect them?

I notice some small baby fish in my tank when I got back from my vacation. I think they are baby platty fish and they were hiding in a large mass of long hair algae.

I was not sure what to do with them so I placed them into a breeder box, thew a bunch of plants inside and have it floating in my aquarium.

I think the breeder box was originally design to put the pregnant female inside and have the babies come out the small vents on the side however the platty can't fit though the vents and the other fish can't get in.

The guess these vents are suppose to provide some water flow though the breeder box however I don't know if perhaps the plants at night might create too much C02 and suffocate the fish or if having all the fish swimming by might create more stress even though they can't reach the little fish.

What do you guys think about this setup?

P.S. I added a shrimp pellet which is breaking down for the baby fish to eat. This is to the left.

Main view:

top view:


75 Gallon community planted Aquarium. Pearl Gourami,Golden barbs, zebra, pearl Danios,black neon tetra, glow-light, denson barb, Rasboras, cherry barbs, fancy tail guppies, hachet fish, rosy tetra, flame tetra
29 gallon Gold fish tank(1 large fish)
55 gallon planted red cherry shrimp tank, otto, neon tetra, white cloud.
10 gallon betta tank

Last edited by SpaceLord; 03-01-2016 at 08:55 AM. Reason: adding pictures
SpaceLord is offline  
Sponsored Links
post #2 of 6 (permalink) Old 03-01-2016, 09:07 AM
Planted Tank Guru
PTrader: (6/100%)
Join Date: Jul 2015
Location: US
Posts: 2,862
Not all breeder boxes are created well. When I was looking into breeder boxes, I checked reviews on the one you have and many people state fry can swim through the slots, pretty much making it useless. (though I can't tell if your fry are large enough to not pass through the grating)

If you have a fine pore fish net, you could suspend that in the tank and let the fry live in it.

I guess if you could use string and cover the slots on the breeder box with finer pore material such as cut up fine mesh nets, or even cut up sponge or filter floss.

other than that I guess you could have the fry grow out in another tank (makeshift if you want).

The vents/slots are to allow water flow through it. A lot of plants might obstruct surface agitation, but if the rest of the aquarium has plenty of surface agitation/dissolved oxygen, the breeder box will be fine. Co2 won't be a problem. Stress shouldn't be a problem. I've had fry in breeder boxes/nets and all the fish were fine.
WaterLife is offline  
post #3 of 6 (permalink) Old 03-01-2016, 09:58 AM
Planted Tank Guru
Nordic's Avatar
PTrader: (0/0%)
Join Date: Nov 2003
Location: Cape Town
Posts: 4,032
Ice cream tub, with a one inch hole each side. Plug the hole with a wad of filter floss. This will allow the water to stay somewhat oxygenated and non stagnant. Let it float in your tank, or let it stand on sime upturned glasses or something if it doesn't float enough. If you are just growing them out to go back in the tank and not in a hurry for them to reach maturity, you can let them go back in the tank after a month or so.

If you want to use a breeder, use a net type, and assemble it with the seam outside, like when you have a shirt on inside out (or the buggers get stuck in it).

Cape Town, South Africa.

Hi. I'm back.
Nordic is offline  
post #4 of 6 (permalink) Old 03-01-2016, 10:14 AM
Algae Grower
PTrader: (0/0%)
Join Date: Dec 2015
Posts: 47
Get an old nylon stocking. Stretch it around the bottom and sides of your breeder box. Cut off the portion of stocking that you don't need. Remove the plants (the fry need to swim). You've now solved the problem of any fry escaping the breeder box until they are too large to swim through the slots. When they are about 1/4 inch with fat bellies you can release them into the tank without much fear of tank mates making a meal of them. Good luck. You are fortunate you have Platy fry and not guppies. :-)
wmnash is offline  
post #5 of 6 (permalink) Old 03-01-2016, 03:25 PM
Planted Tank Guru
PTrader: (84/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 21,012
My planted tanks have always been Darwinian. Right now I have about a dozen black ruby barbs, most of which were hatched out by my original 6-8, 2 of whom made the big jump to freedom. The adults breed often, but for the past month I haven't spotted any of the babies, who are very tiny when first born.

Hoppy is offline  
post #6 of 6 (permalink) Old 03-01-2016, 09:57 PM
Wannabe Guru
PTrader: (0/0%)
Join Date: Jul 2010
Location: Outside Philadelphia, PA
Posts: 1,845
If your really going to get into this, you set up a tank for raising the fry. It's setup similar to a normal tank, except you use sponge filters because they don't trap the fry.

It's the only good way to get serious growth on them. IMO the "beeder boxes" are simply too small, with poor circulation and not worth your time or money.

Feed high quality foods and you'll get them up to size in no time.
DaveK is offline  


Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome