Nice tank. I (and likely others) have some thoughts re your potential choices. I can't reply properly just now but, in the interim, can you let us know what your water hardness is in CaCO3 or German degrees hardness (as this will help work out which fish are compatible with your water); assuming you're UK-based, those figures ought to be available for your postcode from your water company website.
I have a 180litre tank with a under cabinet filter.
I have started my my collection and Plan on introducing new fish every week.
My plan is to have something similar to the list below. I have done a lot of research but would appreciate the opinion of some experts.
So I currently have: 8 danios 3 bristle nose catfish
What I am thinking of getting depending on advice 6 harleighquins 6 swoardtails Tetras but need to do research on which type don’t want fin nippers Guppies Possible shrimp allthough understand That a lot of things like these as a snack. Would like a feature fish but nothing to big, from what I have read a Betta (fighter fish) should be fine with what I have as long as I don’t get any fin nippers and only one. Other option is a dwarf gourami or both if they would be ok?
I think varying the diet is a really good place to start, and I will definitely incorporate a fasting day per week. I hadn't thought of pre-soaking the pellets, so I am going to start doing that as well going forwards.
Sorry to read about this. It sounds as though the cherry barb is indeed suffering from the effects of eating, possibly with the food pressing on its swimbladder and causing it to malfunction. My advice would be: * feeding less at a time but more frequently (eg if you have scope to feed the same amount to the tank per day but split it into separate servings spread out across the daytime); * pre-soaking any pellets/flakes so that it sinks and to prevent the fish taking in air when they eat; * varying the diet so that it includes veg such as chopped pea (shell off pea, each half chopped into tiny morsels) and frozen/live food a couple of times a week; * possibly a fasting day per week. Hope that helps.