Boulengerella xyrekes

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MooseTheWizard

Plecostomus
MFK Member
Jan 22, 2017
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Canada
I have a Boulengerella xyrekes that I purchased on October 31st of this year. The LFS informed me he hadn't eaten in awhile since they ran out of feeders. Since coming into my care he's been in a heavily planted/decorated 40b, on white sand. Tank mates have been a pair of Blue Gularis, and a myriad of small catfish. He hasn't been bothered by any fish.

The problem is he hasn't eaten. I have no idea how this fish is alive. I witnessed him just now put a tiny piece of krill in his mouth and spit it out. He is currently floating in a small tupperware, with 2 silversides floating around him and 2 bits of krill on the bottom. I am hoping his hunger and now complete calm will cause him to eat this.

If he does not eat right now, he is moving to a 5 gallon by himself where I will add 4-6 guppies tomorrow for him to eat, hopefully. He is only about 5", but he is clearly emaciated at this point. I feel bad about his condition, but my assumption from what I've read is that a fish will not starve themselves when offered food. He has been offered food daily since he arrived, and the fish around him eat. I try to drop the food near him, and he has pursued but I had never seen a bite until today.

I am wondering if anyone has any advice, aside from throw him in with some feeders. I hope he will eat as many feeders as I can give him in the next couple days, as I am leaving for vacation in a bit for Christmas and I do not want him to die while I am gone.

He is not sick. No ich, no parasites (visibly), no infection. The tank is typically 0/0/5 - 0/0/20 on WC day. There are plenty of floating plants and IAL to diffuse the light, creating a very 'dim' portion of the tank and a 'bright' portion of the tank. My goal in creating the tank this way was to mimic the hunting style of Boulengerella, in which they hide under cover and then spring out into open water to grab their prey.
 
Great addition. Been a while since I’ve seen one being kept.

If it’s emacuated then would feed the feeders that are qt’d and pre-treated (sketchy feeders).

Similar to other characins. Get some current with a pump and throw in some live crickets in the current. Then mix with cut up shrimp/tilapia/silversides. It’ll eventually take.
 
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Great addition. Been a while since I’ve seen one being kept.

If it’s emacuated then would feed the feeders that are qt’d and pre-treated (sketchy feeders).

Similar to other characins. Get some current with a pump and throw in some live crickets in the current. Then mix with cut up shrimp/tilapia/silversides. It’ll eventually take.

How worried should I be that he hasn't eaten yet? Is this a life support situation, or will he manage to pull through (in your opinion)?
 
How worried should I be that he hasn't eaten yet? Is this a life support situation, or will he manage to pull through (in your opinion)?
I would feed till it gets some weight on size. Then try this method. From what I’ve mentioned I would be concerned. Should be able to wean it later.

Also can get some hujeta gars or small chalceus to help it get relaxed and to use as a teacher fish.
 
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Smaller feeders work well for getting weakened boulengerella to eat. From what I have experienced with boulengerella species that I have.Go for small male guppies or fry or small white clouds. Fish around 2 to 4cm long. Also gut load and treat the feeders for diaeases such as bacterial infections and internal parasites before feeding to the xyrekes. The smaller fish are easier for a weaker fish to eat and hunt. Also do large amounts like 20 at a time. The ones it won't eat will just live with it until he is hungry.
 
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Also keep it in the main setup. moving it into tupperware and smaller tanks is causing it more stress and it won't eat.

My main concern is the two blue gularis it's housed with. I am 100% sure they will demolish feeders if I put them in with it.

Tonight I will try feeding the tank a bunch of food to fill up the killis and then I'll add the feeders and hope that the pike gets some.

I guess alternatively, I could move out the blue gularis. I have been very tempted to be rid of them as they're harassing my Corydoras, and I have a spare 15g they could go into.

I will do some work tonight and update on the progress.
 
Either separate or place in a whole bunch of feeders.
 
Either separate or place in a whole bunch of feeders.

I'm probably going to purchase guppies from the LFS as I know they're safe and I don't trust buying feeder fish (they stock fatheads) due to the typical quality. Do you think 20 will be enough for him to get a fair shot? I'll prefeed the gularis and then dump in the guppies.
 
I'm probably going to purchase guppies from the LFS as I know they're safe and I don't trust buying feeder fish (they stock fatheads) due to the typical quality. Do you think 20 will be enough for him to get a fair shot? I'll prefeed the gularis and then dump in the guppies.
Best bet.
 
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