Bangaii Babies Died

[FishinAround]

I just lost my batch of Bangaii Cardinals and wondering if anyone has any ideas what could have happened. Here's the story. I noticed the male was holding eggs so about day 18 or so I moved him to a small 10g tank. Over the next 4-5 days he spit out about 20 babies, over the next week a baby or two would die until it stabalized out around 17 left alive. I was feeding them baby brind shrimp and everyone was healthy and growing until they where almost 2 months old, then all of a sudden within a 2-3 day period everyone one of them died. No signs of any disease, no change in diet or habit, just died out of the blue. I even took a couple of them into the local LFS to look at under the scoope and they couldn't see anything wrong. All the parems continued to be well withing limits, even verified through the local LFS. Has anyone ever had this happen, any ideas, I'm hoping to eventually have another batch and want to make sure I don't have a repeat.

 

[FMarini]

hummm. 2 month sold and they all died. Thats strange.
Usually the problem is around day 10-20 when the banggers start have nutritional insufficencies issues. So at 2 months they died from something else such as bacterial infection, pathogens, who knows.

One thing that will help you in the long run is to ensure you feed your brine shrimp nauplii w/ phytoplanktons or at least sufficently enrich the BBS w/ Selco/selcon before feeding the fry.
Lastly, try to switch the fry over to dead prepared food by 20 days. Most folks use shaved shrimp mix in w/ their BBS, but frozen cyclopeeze has seemed to work miracles as well.
frank

 

[papagimp]

Sounds like good advice to me.

 

[FMarini]

Thanks-
do we have any more info on the fish and their husbandry?

 

[Elmo18]

Hi there. Hi Frank. I missed your presentation at the PSAS (Seattle, WA) club a couple of months ago.

As to the dying banggais, do you think it has something to do with hydroids? I had a couple die due to those hydroids that look like jellyfish. I scooped the entire tank the babies were in through a 53 micron mesh used for rotifers, and caught them.

I'm not sure, but they bloomed when lots of brine shrimp are fed to the tank. I am guessing that maybe they are stinging them.

I would see one actually get stung, and it would go into some sort of shock, where it shoots up into the water column, then just slowly sink down..all this time still breathing on the bottom of the glass tank. Then 2-3 minutes later, it would either get up and be ok again, or just die.

The rest of the babies were fine, but I lost 5 babies like that, until I looked at the water column closer and saw those nasty things!

Best,
Ilham

 

[FishinAround]

I never saw anything like this (hydroids) in my tank but yet again I wasn't looking for them. I was quite wierd that out of the blue they all died (17 of them) within a couple days having been very healthy and active up to that point. Would 100% water changes help rid the tank of the hydroids? For some reason the pair hasn't produced again but I'm hopeful they will someday.