Posted: Thu Jun 15, 2017 11:14 pm Post subject: Possible causes for sudden death of fish (Goldfish)
Length - 51 inch
Width - 18 inch
Height - 20 inch
Filteration - Auqaclear 30, Aquaclear 50 (with Aquaclear + Seachem Matrix bio media), 2 Sponge filters (XY-380 & XY-280)
Aquarium setup since 2 months
Water changes: - First 2 weeks - Twice a week (30%-40%) water changes
Thereafter: 30-40% waterchange once a week
Last Sunday: 50% water change
I add Seachem Prime as per dosage on bottle during water change.
Live stock: 3 Goldfish - single tailed (1 inch size)
Feeding schedule: Thera+A (2 mm), Saki Hikari (I feed either of these 2-3 pellets per fish twice a day)
My most active goldfish died today evening. It had been in aquarium since 2 months & was always active. It showed signs of lethargy after I fed NLS pellets yesterday evening. It became very less active & started spending time at one section of tank (with little movement). It's position was normal i.e. no tilt or upside down & had no clamped fins.
Today morning, I didn't feed that fish. It looked better when I left for office. (It did swim slowly in aquarium, but not as active as earlier). It was dead when I returned from office in evening. All this happened in just 24 hrs.
The other 2 fishes are very active. I bought them couple of weeks back from store. In fact, one had clamped fins when I bought from store. She is also doing fine now & has recovered completely.
What could be possible causes of such death? Would appreciate some pointers as I don't want same fate for my other 2 gold fishes.
The only thing I did different this week was I siphoned fish poop out every day or every other day (no water change only siphoning). Could this have effected biological filtration?
The only thing I can think of right now is reduce feeding further to only once a day.
I don't have water test kits. Hence, have never tested water.
Posted: Fri Jun 16, 2017 11:56 am Post subject: Re: Possible causes for sudden death of fish (Goldfish)
What kind of gravel you have and don't siphon fish poop often do it on water change, you mentioned fish showed signs of lethargy so looks like your fish had swim bladder disease is one common problem a goldfish will face.
Posted: Fri Jun 16, 2017 12:39 pm Post subject: Re: Possible causes for sudden death of fish (Goldfish)
Thanks Andrew for quick response. My tank is bare bottom.
Regarding Swim bladder disease - By lethargy I mean my fish was swimming normally but very slowly i.e no tilt or upside down or no clamped fins (but not as fast). I am not sure whether this can happen with swim bladder disease. Appreciate suggestion on this.
Also, I saw this change in behavior just an hour after feeding. It was super active prior to feeding. Could swim bladder problem show this fast i.e in an hour & result in death within 24 hrs?
1 more thing - When I bought the fish, it had red gills (signs of ammonia poisoning) & the reddening didn't go away even after 2 months. However, it was super active & feeding normally throughout 2 months. I am also thinking this as possible cause. But not sure then how it survived & remained active for 2 months..
Posted: Sat Jun 17, 2017 11:24 am Post subject: Re: Possible causes for sudden death of fish (Goldfish)
This is the prob with swim bladder because it's difficult to find out and if you read lot about goldfish they will say not to feed in surface because sometimes it takes air with food and this happens rare mostly, because of your fish behavior only i thought it might be swim bladder issue or even it swallowed something from surface of water because this fish munch whatever falls on surface, And regarding red gills i am not sure what causes it, because there are plenty of reasons for that below is a link with some good info, but whatever it's sad you lost your fish and try to add some gravel so the fishes will be little more happy and will also get extra beneficial bacteria also. so looks like you love gold fish, i had 4 it was with me for around 7 years.
Posted: Sat Jun 17, 2017 1:30 pm Post subject: Re: Possible causes for sudden death of fish (Goldfish)
Thanks Andrew for inputs.
What I thought from the behavior was constipation. My other fish also stayed at corner some day back. I stopped feeding for a day & later gave some peas, it bounced back.
What surprised me was fast death (within 24 hrs.) I didn't get chance to think of other possible causes. There was no scratching on surface or gasping prior to that.
I am really shocked with this fish's death as this looked liked the most active & healthy fish of all in terms of behavior. Infact, it was so active that I thought even in case of problems, this should be the last one to suffer.
Good to know that you have also kept goldfish for 7 long years. I absolutely love goldfish.. For some reason, I like single tailed more than fancies.
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