Sea Catfish

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there is another photo of my mystus gulio.But it can be also another kind of other Mystus species....

View attachment 1481603

I am guessing you mean Mystus Oculatus, which would mean not so impressive 2ft size but a more manageable 6”. A possibility due to it also having brackish tendencies and similar location.
 
I've had plenty of Colombians in the past
Would you, please, link where you talk about your experience? If nowhere, maybe you could give us the gist here?

there is another photo of my mystus gulio.But it can be also another kind of other Mystus species....

Mystus is a huge genus. Without looking at any other possible, similar looking species, I thought your fish fits the pictures on Planet Catfish rather well. Your photos are not too good for the ID purpose though.
 
I am asking what's your experience with keeping the Colombian shark catfish, if you were willing to share. Specifying the water would be a part of it.
 
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Ohh...
Kept them in no higher than 1.010, with a pH of about 8. I've kept them twice before.
In my experience, they are not too difficult to keep in the proper salinity. Unfussy, and will accept most foods eventually. Not too sensitive to water params, but not invincible either. They are predatory, though pretty peaceful alongside fish too large to be eaten. They are also pretty fast growers. A standard 55G will do a group of 3 or so well for a couple of months, but at full size, you should be looking at 100G or more for a group. Definitely schoolers.

I would also advise caution against keeping them with aggressive fish like puffers and morays-- unless they are very well-fed, you'll likely start to see some bite marks on your sharks sooner or later
 
I would also advise caution against keeping them with aggressive fish like puffers and morays-- unless they are very well-fed, you'll likely start to see some bite marks on your sharks sooner or later
Puffers are not good community fish....They should be in species tank.Except maybe colomessus aselus.
 
Would you, please, link where you talk about your experience? If nowhere, maybe you could give us the gist here?



Mystus is a huge genus. Without looking at any other possible, similar looking species, I thought your fish fits the pictures on Planet Catfish rather well. Your photos are not too good for the ID purpose though.
i THINK it may be mystus gulio aff.The more often kind of mystus gulio.i think i dont have true mystus gulio...Site: Mystus aff. gulio • Bagridae • Cat-eLog (planetcatfish.com)
 
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