Otocinclus trapped in filter! post rescue

guppywrangler

I have a 65 gallon freshwater with all sorts of friends, and a 15 gallon with two tetra, three shrimp, and intentional bladder snails.

I was cleaning out my 65 gallon’s canister filter, and a poor oto got sucked up the intake hose. He was stuck for a few minutes while it was running. He was pretty badly bent, red marks along his belly. I put him in my 10 gallon (the 15 gal but it is 2/3 full).

Included pics of him being trapped, then right after rescue (dim lit picture), two days after rescues (fins down), and finally, the fanned fins / algae dusty is the most recent pic, 5 days after rescue. Posture is realigned. But there is still redness where the frayed fin is attached. Should I treat?



I’ve been dealing with pretty bad algae and Cyanobacteria in the big tank. Of my 7 cories, 2 got noticeably sick, deteriorating barbels, this went on for a few weeks. I was hoping that clearing the algae and Cyanobacteria would be the solution.

But then 3 healthy-looking cories died within a span of 3 days :( I removed the two noticeably sick ones and treated them with Kanaplex in a 3 gallon, aerated, heated hospital tank. I suspect (????) the two sick cories got a fungal mouth infection and likely a secondary bacterial infection, and the bacterial infection quickly spread to the others?

But I am also worried there is something wrong with my substrate in the big tank. Of my original 6 kuhli loaches, I only ever see 3 of them… I have assassin snails that quickly dispose of dead fish. Two of the cories that passed, didn’t even see their bodies. fell asleep, woke up, they were gone.

One of the original two sick cories has started regenerating his barbels (picture attached), but the whiteness is still spreading across his face.

I’m wondering what I should do for the cories? I was thinking kanaplex again, and etheromycin for gram positive bacteria, in the hospital tank again.

For the oto, I want to treat his damaged fin.

Might yeet the two tetra? They’re so vicious, they killed/starved the other 5 tetra, so I didn’t want to add more tetra. I hate them tbh, but feel morally wrong killing healthy fish, so I left them to commiserate. Now… I don’t want them interfering with the recovery of the fish I actually enjoy.
 

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