Is the white growth on the Melanotaenia sahulensis columnaris or ich? I noticed growth with them first on Friday. That fish has the most growth, and the other six have this growth at various levels. An employee at my lfs said it was fungus, and to treat it with pimafix. I’ve been using that for 5 days and I haven’t seen any changes. I was going to continue the pimafix for 2 more days and then do a water change and treat with salt. These fish are in a 5.5g aquarium.
The second picture is of a Rhadinocentrus Ornatus with white lips in a separate 10g quarantine tank. There’s 9 others that have white on their lips like that. I noticed the growth on the rhads yesterday. I put in 3 tablespoons of salt, and their lips haven’t changed. I put in a uv sterilizer into this aquarium Saturday to try and preempt an outbreak in this tank
The last two pictures are of the aquariums. They’re unheated, the temperatures are 71-75 F, have 7.0 ph and 50 general hardness and 40 carbonate hardness. The 10g has a reticulated hillstream loach, a baby peppermint bristlenose pleco (L181), and adult & young least killifish.