Euthanizing A Few Fish Right Now

[Adriifu]

Hello! I have a 55-gallon tank that's been having some issues lately. It's been running for almost a year now and the parameters are 0, 0, 10-20. I have 12 leopard/zebra danios, 9 peppered corydoras, 1 albino rainbow shark, 1 albino bristlenose pleco, and many mystery/pond/yellow rabbit snails. Three of my danios have been showing odd health issues. I decided to euthanize them immediately, as it appears to be something similar to neon tetra disease or fish tb. At the moment, they're all asleep. I'm about to add the final dose to put them down. Here are the symptoms: a slightly hunched back, but not nearly as severe as fish with tb; (only one of them with this symptom) extremely small size with sinking belly; very slow swimming; staying away from the rest of the school; ulcers (pink and occasionally white); damaged scales; loss of color; (only one with this symptom) inflamed anus; clamped fins. The first one (gray) is Jasper. He's my oldest danio (3 years old) and has been showing this odd behavior for a couple months now. The ulcers near his fins would come and go, but the one he has now just doesn't go away. He stays on the right side of the tank near filtration and shows the majority of these signs, exluding the sinking belly and inflamed anus. He was eating well, but didn't seem like he'd be alive for much longer. The second danio (white) is Lace. She has the every sign except the inflamed anus. Very small fish with an extremely sunken belly. I saved her from a preschool and she hasn't really been reacting to the medication from quarantine (Prazipro) since then. She eats very well, but doesn't seem to gain any weight. Her poop is normal if anyone's thinking it's an internal parasite. The last danio (brown) has the worst hunched back and an inflamed anus. She just recently showed these signs. She also has white ulcers. If anyone can help, I'd appreciate it. Thank you.

 

[finnipper59]

Hello! I have a 55-gallon tank that's been having some issues lately. It's been running for almost a year now and the parameters are 0, 0, 10-20. I have 12 leopard/zebra danios, 9 peppered corydoras, 1 albino rainbow shark, 1 albino bristlenose pleco, and many mystery/pond/yellow rabbit snails. Three of my danios have been showing odd health issues. I decided to euthanize them immediately, as it appears to be something similar to neon tetra disease or fish tb. At the moment, they're all asleep. I'm about to add the final dose to put them down. Here are the symptoms: a slightly hunched back, but not nearly as severe as fish with tb; (only one of them with this symptom) extremely small size with sinking belly; very slow swimming; staying away from the rest of the school; ulcers (pink and occasionally white); damaged scales; (only one with this symptom) inflamed anus; clamped fins. The first one (gray) is Jasper. He's my oldest danio (3 years old) and has been showing this odd behavior for a couple months now. The ulcers near his fins would come and go, but the one he has now just doesn't go away. He stays on the right side of the tank near filtration and shows the majority of these signs, exluding the sinking belly and inflamed anus. He was eating well, but didn't seem like he'd be alive for much longer. The second danio (white) is Lace. She has the every sign except the inflamed anus. Very small fish with an extremely sunken belly. I saved her from a preschool and she hasn't really been reacting to the medication from quarantine (Prazipro) since then. She eats very well, but doesn't seem to gain any weight. Her poop is normal if anyone's thinking it's an internal parasite. The last danio (brown) has the worst hunched back and an inflamed anus. He just recently showed these signs. He also has white ulcers. If anyone can help, I'd appreciate it. Thank you.

Hurry up and just finish putting them down. Whether it to or not, signs of wasting are bad. PraziPro is an excellent antiparasitic. I use it too. But if it's not to, wasting is a symptom that even a bacterial infection is in it's late stages.

 

[Adriifu]

Hurry up and just finish putting them down. Whether it to or not, signs of wasting are bad. PraziPro is an excellent antiparasitic. I use it too. But if it's not to, wasting is a symptom that even a bacterial infection is in it's late stages.

They're dead now. I'm very worried about my other fish. Do you think they'll be okay? It seems as though these three have been wasting from the inside out, which is a sign of neon tetra disease, correct?

EDIT: The one with an inflamed anus produced a bunch of eggs before dying. I was burying their bodies and realized all of Jasper's scales just came off onto my gloves. Sorry if this is gross to anyone.

 

[finnipper59]

Yes. It's a sign of neon tetras disease, but some other diseases can cause wasting as well. Even though PraziPro is the best antiparasitic in my opinion, it still won't kill tapeworms. If you haven't disposed of the fish yet, I would dicect one and look at internal organ damage and digestive tract insides including inside the stomach. You need all the information you can gather to make a proper diagnosis. That would be most helpful to the fish you have left as to know if they need to be treated if a treatment is available.

They're dead now. I'm very worried about my other fish. Do you think they'll be okay? It seems as though these three have been wasting from the inside out, which is a sign of neon tetra disease, correct?

 

[Adriifu]

Yes. It's a sign of neon tetras disease, but some other diseases can cause wasting as well. Even though PraziPro is the best antiparasitic in my opinion, it still won't kill tapeworms. If you haven't disposed of the fish yet, I would dicect one and look at internal organ damage and digestive tract insides including inside the stomach. You need all the information you can gather to make a proper diagnosis. That would be most helpful to the fish you have left as to know if they need to be treated if a treatment is available.

Uh, I can unbury the most severe case and disect him. Should I? That would be Jasper.

I'm going to the gym soon, so I can't really do that right now. By the time I get back, they'd probably be covered in decomposers.

 

[finnipper59]

Uh, I can unbury the most severe case and disect him. Should I? That would be Jasper.

I'm going to the gym soon, so I can't really do that right now. By the time I get back, they'd probably be covered in decomposers.

It could be put in a piece of plastic wrap and refrigerated until you get back if you even want to do it at all.

 

[Adriifu]

It could be put in a piece of plastic wrap and refrigerated until you get back if you even want to do it at all.

I left before reading that message. I’m just not gonna bother digging it up. What would I even look for if I were to do it?

 

[finnipper59]

I left before reading that message. I’m just not gonna bother digging it up. What would I even look for if I were to do it?

If you've already burried in the soil, there is no use in bothering with it now. Pathogens such as nematodes found in the soil could manage to start feeding on it and make you think it had worms. So the sample is tainted. If another fish dies that had the system of wasting. Look at the organs for cysts and check inside the stomach for tapeworms.

 

[Adriifu]

If you've already burried in the soil, there is no use in bothering with it now. Pathogens such as nematodes found in the soil could manage to start feeding on it and make you think it had worms. So the sample is tainted. If another fish dies that had the system of wasting. Look at the organs for cysts and check inside the stomach for tapeworms.

Okay. Thank you. Should I be worried about the other species of fish if the danios are the only one who showed symptoms?