We have been dabbling in fish keeping for around 4 months. We have not lost (that) many in our trial and error and as the children have lost interest, I have actually started enjoying it!
We have (don't all groan) a 60l Biorb. Currently stocked with a swordtail, a dwarf gourami and two tetra. I thought that the swordtail was ill with a tumour about 6 weeks ago but on doing some research decided she was probably pregnant (and had been when purchased). However the large bump disappeared and the children were stoical about the fact that fish eat their babies! I had gone out to buy a fry net but missed the birth
So, 6 weeks on, a rather dirty tank desperately needing cleaned due to a holiday away and the loss of two tetra to whitespot (interestingly they were the only ones to get it and I thought they had been happily treated, hey ho). Due to the need to find the two tetra and remove them, I emptied the tank of all items of decoration and started removing the ceramic media at the bottom. For those not famkiliar with biorb, the media is really chunky unlike normal gravel and luckily for us, has lots of hinding places.
Imagine my surprise when 7, 0.6 ish cm long red mini swordtails start darting around. They have been hiding at the bottom, feeding on the left over food detritus (and possibly a tetra) for around 6 weeks. After fishing them all out in little glass dishes as the gourami and adult swordtail could obviously see lunch, I am now at a loss what to do.
I didn't feel I could just put them back in to go and hide at the bottom again as I felt their luck may run out. I have put them in the nursery net cage thingy at the top of the tank. However now they are not able to access all the food bits at the bottom.
1. should I just release them back into the tank and let them be?
2. If not, how often do I have to feed them? I gave them some flaked food that we use today and they seemed to be able to eat it by biting at it until it disintergrated.
3. Do i need to change the water more often now?
4. should I just set up another tank for them?
4a if so, would they cope with the cycling of the tank or would I be better to swap the exisiting filter over and put a new one in the existing tank?
Huge thanks for reading