RonBFree Posted November 28, 2021 Share Posted November 28, 2021 I have three community tanks (a 55 and two 29's). I have had all three for 4 years or so. I do 50% water changes twice monthly. pH is about 7. Ammonia and Nitrites are zero, TDS about 300. Nitrate usually about 20. The 29's have a mix of tetras, rasboras, platys, angelfish, cory catfish and a pleco. The two 29 gallon tanks do fine with livebearers (platys) but whenever I put platys or swordtails in the 55 they die. The only difference in the types of fish I have in the tanks is the 55 has two clown loaches about 6 inches long and two Roseline Sharks (Denison Barbs) about four inches long. I bought a school of 5 platys and put them in the 55. One by one they all disappeared. Same with a school of five swordtails. They all looked healthy when they were alive. They would be there in the evening when I fed the tank but where gone the next morning. I could find no dead bodies so I assumed the dead bodies where eaten by the other fish. What do you think is going on? Link to comment Share on other sites More sharing options...
Dwayne Brown Posted November 28, 2021 Share Posted November 28, 2021 Um i'm not 100% sure but if you found no bodies perhaps there were eaten by other fish in the aquarium. How big were the platy's and swordtails when you added them to your tank? Link to comment Share on other sites More sharing options...
RonBFree Posted November 28, 2021 Author Share Posted November 28, 2021 All were adult size Yes I assume they were eaten by the other fish. I am wondering if they were killed by the clown loaches or Rose line Sharks. I doubt that it's the Roselines as I was having this problem before I got them Link to comment Share on other sites More sharing options...
Dwayne Brown Posted November 28, 2021 Share Posted November 28, 2021 @RonBFree I mean they can. I know someone who added some Guppies to a tank of clown loaches and they ate 4 of them in front of us... I think it might be both the clown loaches and roseline sharks, they both are opportunistic feeders. The loaches might begin the "hunt" but the Roseline's probably play a part in it as well. Link to comment Share on other sites More sharing options...
Colu Posted November 28, 2021 Share Posted November 28, 2021 Do you have a sponge on the intake pipe to your filter and do you have lid on the tank are you water parameters the same as the over tanks Link to comment Share on other sites More sharing options...
Brandon p Posted November 28, 2021 Share Posted November 28, 2021 (edited) I’m with the 6” clown loaches. They are 4-5”. I have 5 in my 75g and they eat anything anything that fits in their mouth. Edited November 28, 2021 by Brandon p Misspellings 1 Link to comment Share on other sites More sharing options...
RonBFree Posted November 28, 2021 Author Share Posted November 28, 2021 I have a intake sponge on the intake pipe of my HOB filter. Yes I have a lid on the tank Link to comment Share on other sites More sharing options...
RonBFree Posted November 28, 2021 Author Share Posted November 28, 2021 Yes water parameters are the same in all three tanks Link to comment Share on other sites More sharing options...
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