Hi there!
I'm opening this thread to talk about the restocking of my 44g long tank after a series of deaths that have massacred half of the stock. This was the stocking 1 month ago:
2 Honey Gourami (m+f)
5 Sparkling Gourami (3m+2f)
10 Peppered Cory
8 Cardinal tetra
8 Glowlight tetra
12 Cherry Barb (4m+8f)
4 Otocinclus
6 Amano Shrimp
The barbs were the last to arrive and finished the community stocking. Before them, the tank was quite chilling and everyone was pretty clam. After them, everything scaled up with their chasing and territory defense. Tetras packed in one group, Honeys started to be always on one side, Sparklings started to ram between them and with the barbs and corys dispersed on tank.
2 weeks ago, deaths started, +3 every day. First 2 sparkling gouramis without symptoms, then the cherry barbs and some tetras started to be quickly bloated and died. Also some barbs, tetras and 1 sparkling appeared dead without any symptoms. PH and GH didn't change, 0 ammonia, 0 no2, 5-10 no3, same 20+20% weekly WC, same quantity of food and type (hikari, azoo, NLS) no fungus, no wounds, no fin rot, no quick breaths.. They just suddenly died (apart from bloated barbs and tetras). With that situation and no clue, 10 days ago upped temp 3C° and treated the whole tank with Dajana Multicure, a full spectre medication (green malachite, methylene blue..). After 2 days, deaths slowed down to 1 fish per day. Today is the second day without loses, tomorrow will start to clean the water with carbon, extra big WC and low temperature as normal. No ammonia or no2 appeared, so seems like medication didn't kill beneficial bacteria.
I don't know what the **** happened. Maybe the barbs stressed the fish and weakened them? Maybe too crowded? Maybe they came with something? I don't know, the strange thing is that no Honey gouramis, otos, corydoras and amano died during these weeks (including the hard medication). The 2*7g aquariums with shrimps+5 cpd and shrimps+8 chili rasboras have been not affected.
Said that, the plan is to wait some weeks, rehome tetras (5) and barbs(4) left and restock progressively with hardy, more water parameters compatible and friendly fish (Honeys/corys attitude) to avoid that happening again. Also want to start breeding fish (just bought sponge filter and heater for 2*4g acrylic cubes). Grown fish will be rehomed.
Tank parameters and picture: Ph 8, GH 6, KH 11, temp 25 up to 29 C° in summer, 130*38*35 cm. Fishes I'll keep:
2 honey gourami
2 sparkling gourami
10 peppered cory
4 otocinclus
Amanos are difficult to find all, seen 4 together his night.
Thought about upping gouramis and adding live bearers, something like:
A) honeys to 6, sparkling to 8, peppered cory to 14 and add 12 endlers.
B) honeys and sparkling to 3, peppered cory to 12, add 10 endlers and 8 platys.
What do you think? Someone has experience with big groups of honeys/sparkling gouramis? Experiences mixing gouramis and livebearers?
Thought about forktails, but they seem quite hiperactive. Rams are beautiful but maybe too much breeding-aggressive fish. Rummynose are nice but didn't match parameters, silvertip tetras are aggressive sometimes..
Other ideas/proposals are much appreciated!!
Thanks!!