Successful Fallfish keeping
Posted 10 May 2019 - 09:27 AM
Throughout the last two years, I have kept mainly panfish, eels, and yellow perch. The fish that I have utterly failed to keep, despite many attempts to overcome this, were Fallfish.
Each time, the fallfish repeatedly attempts to jump out of the water, hitting the aquarium cover. They died eventually. Some I kept away from other species concerning stress from aggression. The last attempt, I tried cooler water at ~66F. The same behavior persists in both large(90gal) and size 40 aquariums.
I lost interest in Fallfish, but I want to know if somebody also experienced this, or maintained Fallfish with success.
Posted 10 May 2019 - 12:17 PM
Being a big, powerful, Cyprinid, they can really book it if spooked--even at a small size. I'm guessing that's what your fish are dying from (impact trauma). I've had 4" Muskie "brain" themselves in a 75 gallon, even in a quiet area. Fallfish aren't difficult to keep and there isn't much that can really push a Fallfish around, aside from a much larger fish. Not sure where your tank it set up, but if in a high-traffic area your previous fish could have been spooked and rammed the glass. A 40 or 90 is sufficient for small/juvenile fish so tank space shouldn't have been the problem if properly stocked.
I wouldn't give up on them. Try another one especially if you decide to relocate your tank. Jumping can't be avoided, but minimized. You could try lowering the water level a bit. When do you collect your fish? Summer can be a hard time for fish transport and pathogen loads. Maybe the culprit isn't jumping? Just a thought.
Posted 10 May 2019 - 03:09 PM
You might need to start with juveniles.
The member formerly known as Skipjack
Posted 10 May 2019 - 04:15 PM
My WBN Dace committed seppuku 2 weeks ago by jumping. He had injured himself a few months ago from hitting the canopy. This time, despite having duct tape over the small feeding hole in the canopy, it was wet and loose and he jumped through that small opening because the tape was loose.
Like said above, Cyprinids tend to be jumpers. Try to get them very small. It seems that they tend to jump less when you catch them very small and raise them in a tank. All of the older Cyprinids I have ever had jump a lot.
Posted 13 May 2019 - 12:04 PM
The traditional aquarist solution is to "install" floating vegetation.
Posted 14 May 2019 - 07:29 AM
Over a decade ago when I had a large group of blacknose dace, jumping was an issue. I notice that fish were constantly trying to jump out in the area closest to the HOB filter. I put a powerhead in the tank (river manifold style) and kept the output in a relatively low position within in tank. The fish focused their swimming efforts near the powerhead, and attempts to leap out of the tank greatly reduced. Over the years I noticed that species that live in swift runs or riffles tend be jumpers in a slow-flowing tank. However, increase the flow to mimic more natural conditions and the jumping was reduced. Might be worth trying.
Posted 14 May 2019 - 02:46 PM
Well, guess that the WBND will never do that again.... He came out of a nice little pothole in a slow stream. However, I think that they're more a riffle fish. My central stoneroller jumps too, but this time I put a glass insulator overtop the duct tape covering the feed-hole. I also duct taped the open areas around the HOB filter. So that about covers it. It might not stop them 100%, but they'll have a HARD time making it out of a hole that's smaller than they are.
Might give the powerheads a try when I decide to reset the tank.
Posted 14 May 2019 - 06:10 PM
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