this post was submitted on 18 Aug 2025
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Aquariums and Fish Keeping

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[CW: talk about losing fish]

I was so excited to get some more peacock gudgeons to join my one lonely one in a big, planted, 50 gallon+ indoor pond. I got them from the incomparable Dan's Fish. Followed his instructions to float the bags then add the fish.

For a day or so, everything seemed okay. Then it seemed like I couldn't see any of the peacock gudgeons for a couple of weeks. I didn't think much of it, as I know they can be shy while they're getting settled in.

One evening I noticed the first little dried out fishie on the floor. I wondered about the rest, but after a few seconds of searching about, I didn't see any others. The next evening I looked more closely and tangled up in the cables and tubes on the floor around the pond I found the other three.

I'm sad, but also I know they're just fish and these things happens sometimes. I hope I can learn how to prevent this in the future, if possible.

Interestingly, my local Petco had two peacock gudgeons, too. I brought them home, kept them in a mini quarantine (with a lid lol), and then drip acclimated them and added them to my mini-pond at night when the lights were almost 0%, one new fish per night. It has been almost two weeks, and both seem to have settled in, showing their cute curious faces sometimes on my underwater livestream or in person at the surface. Though Dan's Fish doesn't mention it, Aquatic Arts mentions that they can jump, especially in the first couple of weeks.

What do I think is going on? What do you think is going on?

  • Could it be the stress of different environmental conditions? Dansfish keeps fish in relatively hard 8.2 pH water (16dGH, 16dKH). In NYC, my water is 6.8pH and very soft with 1 dKH and 2dGH.
  • Could it be the stress of how they were added? The jumpers were added all 4 at the same time, and the lights were on.
  • Could it be the lack of drip acclimation? For fish coming in the mail I know it makes sense to not drip acclimate, but now I wonder if it's better to keep them in a small acclimation tank and only then introduce them to the rest of their new family.
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[–] marduk@lemmy.sdf.org 3 points 1 month ago

You can lead a fish to water but you can't make them swim... Sorry for your loss

[–] Mikelius@lemmy.ml 2 points 1 month ago (1 children)

I know it might sound weird, but do you have any kind of "night" lighting? I've experienced fish jumping out when it was essentially pitch black where as I've never had any jump out when there was a night light available. Otherwise yeah I'm not sure why that would happen, honestly.

Could have been an illness or stress, but no idea... Hope you don't experience that again though. I tend to try "drip acclimate" (but with the bag itself, slowly removing water into a separate bucket) regardless of the source, plus a minimum 24 hours of a quarantine container in the same fish tank it'll move into. For more aggressive or territorial fish (on either side of the container), much longer. I don't currently have the space for a separate quarantine tank but would also recommend that for diseases and pest control, for the initial phase.

^ this goes for both fresh and salt for what I do btw.

[–] cybervseas@lemmy.world 2 points 1 week ago

Thank you for your condolences. I normally keep it totally dark at night, but more recently I've shifted to having a dim light on until 12:30am, where previously all lights would turn off by 9pm. Maybe I'll keep a light in the room dimly on 24/7 for a few days whenever I add a new inhabitant.

Quarantine after acclimation is a very good idea, and thankfully I can fit a little plastic tank with lid on my desk for any newcomers. I also have a little floating hospital tank (with lid lol) that I could keep a newcomer in for a day or so for observation and adjusting to the new water.