Ok, i have a 10 gallon tank with heater, slightly high ph (well, really at the highest amount for a beta and tetras-7.4), a thermometer, a filter, 1 beta, and 4 (well, NOW four) neon tetras. 2 days ago, i bought 5 neon tetras. they were to go with my beta that i currently had in the 10 gallon tank. the water is pure, i clean it approx. every 4-5 days. when i first got my tetras and put them in, they were fine. yesterday, i noticed the beta was sometimes swiming right next to them, but they were out in the open and he was "stalking" in the plants. occasionally they would swim together in the open, so i figured it was ok. half the time, this one neon tetra (he was a tad longer and slimer than the others, and had more potent coloring) would separate from the others, sometimes swiming side by side with the beta. this morning, i was feeding my fish when i realized only 4 were swiming around in the tank. i couldn’t find the last one! my mom went fishing around the tank with her hand when…
…she accedentally uprooted two plants. when she was re-planting them. she saw a tetra floating around with no tail at the surface. my little "rebel" was dead! he must of been held down by the plants. he definetely wasn’t floating b4. non the less, we think the beta bit off his tail. now, the other fish always stay in a school, but occasionally separate. ever since, ive noticed they are a more aggressive. the beta is always "stalking" in the plants, though it looks as if he is looking for food. but, just now i saw he looked for food right beneath the tetras, and i tapped the tank so that the tetras would see him. then he tried to take a little nip out of them one, but he got away. i really want my fish to stay safe, what should i do???
p.s. i also got these fish from petco, so i still have a warently on the 5 tetras if i should by new to keep the quantity high. thx!
i let my tank go through the cycles and all that already.
oh and also, for the part of the question saying what is wrong with my fish, my beta has this large lump (about the size of his head) right behind his gills.
did i forget to say the dead neon had NO TAIL!!! (when he was found dead , of course.)
im still waiting for answers…desperately!
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