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Calling all Rummy Nose Tetra owners!

1862 Views 26 Replies 7 Participants Last post by  pecosROB
So I've been wanting to stock my 40 gallon with some RNTs and finally was able to get some from one of the LFS in my area. I was only able to get 7 and planned on having at least 16 in the tank with some Corys, Otos, and one of my King Bettas (less aggressive than the other one I have).

Well, after the first night, 2 of them died (this was yesterday). Took them out (one was dead in the morning, the other later in the evening) immediately and now I have 5. Wake up this morning and 3 more are dead. I've had them in my quarantine tank (10 gallons) which doesn't have much for decoration, just one decently sized silk plant, the water heater, a sponge filter, and a little ornament that I attached a little bit of hornwort to (it looks like a statue head used for a planter, I ripped out the fake plastic plant that was in it) to help a little with the ammonia. The tank has been running for weeks and has been cycled and I've use it prior on other fish to observe before placing in the 40 gallon. This morning I tested the water - 6.8 pH, 0.25 ppm ammonia (my water comes out around 0.25 by default), 0 ppm nitrites, 5 (maybe even 2.5) ppm nitrates. I went ahead and put in another sponge in the tank from one of my other tanks to help with more bacteria.

I know RNTs love to school, should I look hard for another small school of them or will they be OK for a week in the tank (assuming they live) without anymore RNTs? I'm afraid I'm going to wake up this week and those 2 are dead...

tldr: should I get more RNTs for the 2 survivors ASAP or will they not get too stressed and depressed if it takes another week to get more?
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This is a notorious issue with rnt’s. I always loose at least one from each new batch.

One thing you didn’t mention is your temperature, what are you keeping the tank at? They like it a little warmer than what most sites / info says , like 27/28c.

As you know they are schoolers and will feel safer in a bigger group but a week shouldn’t affect them too much. Reduce stress and keeps lights dimmed or off where possible . Try and reduce foot traffic if possible around the tank too.

Personally if it were me I’d start looking for another healthy group from another vendor, if they don’t look healthy , don’t bother. They are sensitive little fish and in my experience don’t handle transitions well, if you do get more consider a slower acclimation , I found it helped a lot ! The newer group I got have a pretty green spot on the head and they have been a lot more robust. :)
 

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You’re Definitely not an exterminator !! I’ve mentioned I’ve lost some out of every batch and honestly I think it’s an acclimation / temperature thing, plus then just being so sensitive to change. Don’t blame yourself.

Everything you read online says 25c is good for them but it isn’t ! There’s a reason discus/ ram keepers have rummy’s too. They really do need that couple of degrees warmer to stop issues. So even if you acclimate well and they settle , a few months later down the line at that lower temp you’ll likely start to see some issues and lose a few more. It’s an all too common story.

I’m seriously rooting for the little guy . If you can find healthy , robust rnt then get them. Diamond back are even better if you can find them :)
 

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Oh no, poor little guy. One of the batches I had I left to grow out in the shop for a couple of months and just kept checking in to make sure they still had them and they were the same ones.

Im sure the qt will make the next ones more
Comfortable. Good luck with them !
 
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