I had 2 tigrinus that recently died and i think it was iodine poising from feeding them shrimp. Symptons were fish started to swim upside down and had no balance control? We had about 6 at the store that all died the same way they were all eating only shrimp. Had a few more that were fine and they were eating silversides and shrimp. Shrimp is the only thing i can think of, My two that died were in same tank and water was perfect died within 2 months of each other any ideas?
Tigrinus and iodine poisoning?
- Thread starter csx4236
- Start date
ummm heres an idea.....
is there any way you could thaw out the shrimp in your tank water and test for iodine?
is there any way you could thaw out the shrimp in your tank water and test for iodine?
Well the fish definately have a swimbladder disorder if they are swimming without any balance, what caused it as the main question though. The main things which can cause swimbladder disorders are constipation and internal bacterial infections, or direct physical damage to the swimbladder (sustained from something like the fish getting accidently squished, or not being acclimatised to the tank properly, or fish getting in a bad fight with other fish etc). Bad water quality like ammonia or nitrites present in the water can cause swimbladder problems in fish as well.
I've never heard of fish dying from iodene poisening from being fed shrimp. What i think is more likely that happened was that by feeding the fish a high protein diet of shrimp only, the fish got constipation, which then led to a swimbladder disorder as the pressure of the old food in the fishes guts put pressure on the fishes swimbladder, causing the fish to swim funny. Left untreated it proved fatel for the fish. Feeding un-thawed out frozen foods could have also messed with the fishes digestion.
The other posibility is that they had internal bacterial infection, either brought on by digestive problems, or unrelated to the feeding of the fish. Its also posible that the swimbladder problem was sustained by direct physical damage.
Another posibilty would be that feeding the fish a high protein diet of shrimp, and not doing enough water changes, messed with the water quality of the tank and the water quality turned bad and caused the fishes swimbladder problems.
How large are the tigrinus are how much shrimp were you feeding them and how often? How many tigrinus are there in the tank?
My advice would be to try and vary their diet more instead of just feed the fish shrimp, and feed the fish more sparingly for now. I would also treat the fish with an anti internal bacterial med.
How often are you doing water changes on the tank and how much are you taking out on average? How many gallons is the tank and what fish do you have in it exactly and how many etc? Do you have a water quality test kit fot ammonia, nitrites and nitrates?
When feeding large predatory fish lots of high protein foods, you need to be extra vigilent about doing regular water changes and keeping an eye on the water quality.
I've never heard of fish dying from iodene poisening from being fed shrimp. What i think is more likely that happened was that by feeding the fish a high protein diet of shrimp only, the fish got constipation, which then led to a swimbladder disorder as the pressure of the old food in the fishes guts put pressure on the fishes swimbladder, causing the fish to swim funny. Left untreated it proved fatel for the fish. Feeding un-thawed out frozen foods could have also messed with the fishes digestion.
The other posibility is that they had internal bacterial infection, either brought on by digestive problems, or unrelated to the feeding of the fish. Its also posible that the swimbladder problem was sustained by direct physical damage.
Another posibilty would be that feeding the fish a high protein diet of shrimp, and not doing enough water changes, messed with the water quality of the tank and the water quality turned bad and caused the fishes swimbladder problems.
How large are the tigrinus are how much shrimp were you feeding them and how often? How many tigrinus are there in the tank?
My advice would be to try and vary their diet more instead of just feed the fish shrimp, and feed the fish more sparingly for now. I would also treat the fish with an anti internal bacterial med.
How often are you doing water changes on the tank and how much are you taking out on average? How many gallons is the tank and what fish do you have in it exactly and how many etc? Do you have a water quality test kit fot ammonia, nitrites and nitrates?
When feeding large predatory fish lots of high protein foods, you need to be extra vigilent about doing regular water changes and keeping an eye on the water quality.
Hey Mike sorry to hear about the tigs. I have grown mine from 9" to 17" over the past 16 months with shrimp being 95% of its' diet. It has only recently started eating sinking pellets. Just my 2
My tank is 600 gallons, my water conditions are perfect 7.0ph no ammonia and no nitrates at all. Do 50% water change 2 times a week. Both fish were in perfect condition no problems with fighting or anything else. I feed them shrimp every other day and silversides 2 times a week, they do not eat the silversides just pass them up for the shrimp. I had them for over a year and they were 18". All food thawed properly everytime. Tank was treated with anti parasite and bacteria medicine about a month ago. I had 2 tigrinus fish in my tank 18" ea. I have total of 12 fish in the tank. This same problem also occurred at my buddy store with other tigrinus and we firgured it to be shrimp since those fish were also eating only shrimp, we have a few more that are fine and there eating silversides and shrimp.
Do the fish that look unwell appear to have lost any weight at all? Are their colours vibrant and good?
How long were the fish at the store and your in tank for before they died roughly do you know?
How long were the fish at the store and your in tank for before they died roughly do you know?
Tokis-Phoenix;912027; said:
No weight loss at all they eat like normal and then within 24hrs start having problems. Colors are still vibrant. The fish in my tank and store are about 1 year old and they ones in my tank have been with me for the whole year.
Thats odd then. Looks like you are looking after your fish properly either way which is good, what particular type of shrimp were you feeding the fish?
In Australia, rumour has it that imported frozen shrimp are sprayed with formalin which keeps shrimp looking fresh by stopping them from going black. This is heresay since at high doses formalin is a known carcinogenic but I do get a tingly sensation and slimy feel handling some frozen shrimp. Hard to explain but easy to tell when you do handle real frozen shrimp. The safest bet is to rinse thoroughly and perhaps peel the shells off although I would prefer to leave shells on for roughage and calcium.
This idea has been discussed amoungst a few Aussie fish keepers but may have no relevance to you guys.
This idea has been discussed amoungst a few Aussie fish keepers but may have no relevance to you guys.