Flowerhorn issues.

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Randys

Dovii
MFK Member
Nov 3, 2015
488
470
102
Traverse City, Michigan
I've got a couple of issues with my flowerhorn that's puzzling me.

First of all, I purchased this guy from a business that imported him from a reliable breeder in Thailand and placed him alone in my 90 gallon tank 13 months ago. He's always been a healthy, active, and interactive little guy but in the past 13 months he's only grown from 4" to 5".
Then about a little over a week ago he started showing the dreaded swim bladder issues. I dosed with epsom salts (1 table spoon per gallon) and have been dosing with Melafix for the past week. He's still active, happy to see you, and always ready to eat but other than that he's still resting on the bottom.

Some details:
* I do a 90% water change every 2 weeks. Never miss it.
* I feed NLS every two days.
* Water parameters have always been acceptable. I was even concerned about my well water causing the growth issue so I had my water tested. They claim there are no issues. I specifically asked about nitrates and they claim there were none in my sample.
* I've got many years experience at fish keeping. I've even had a 300 gallon tank running in my man cave for the past 7 years and currently running very stable with 11 Centrals.
* This 90 gallon tank has been running for 11 years. I started out with Africans and kept those for 5 years then decided to switch to Centrals in all my tanks with the goal to keep larger fish but this tank has always given me trouble after that. I next purchased a juvenile flowerhorn and he lasted for 2 years. Then I purchased a full grown Trimac and he only lasted for two years. Getting kind of discouraged I thought what the heck, I'll try some cheap Petsmart Oscars (even though I have hard water). I went through 5 Oscars in a about a year and a half. They didn't even begin to grow until dying.

I'd sure appreciate any imput.
Thanks!
 
Lots to unpack here.
First is the fish eating?
How does the feces look like?
You mentioned water changes every two weeks, but what is your specific water parameters look like?

You mentioned a possible swim bladder issue, is he listless or struggling to stay upright? Swim bladder issues are difficult to treat, mainly because it’s virtually impossible to diagnose the cause. Plus, there are only a handful of conditions that will respond to treatment.
 
Thanks for the response:
Oh yeah, he still loves to eat.
I haven't been able to witness the feces and I have pebbles in the tank for substrate which hides anything laying on the bottom.
Parameters: ammonia 0, nitrite 0, and nitrates 10. And the last water change was a week ago.
He's still very active when he sees you. He can stay upright but spends most of the time sitting on the bottom.
 
Flowerhorns are prone to gastrointestinal issues which unfortunately are quite common, so Hexamita could also cause lethargy which would be a different treatment with metronidazole. I treat swim bladder issues with Kanaplex and methylene blue. As I said it’s extremely difficult to diagnose the cause. This would be a guess but since they’re prone to gastrointestinal I would start there.

Since the fish is eating I’d try RD’s method with epsom salt or using medicated food. I have personally never tried the epsom salt soaked pellets but anything RD says can be taken as gospel. I’ve always used the pellets or flakes from Ken’s.


 
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