New group of 6 Microglanis iheringi... or are they?

All posts regarding the care and breeding of these catfishes from South America.
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bekateen
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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

It looks great!
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Re: New group of 6 Microglanis iheringi... or are they?

Post by fishguy1978 »

Thanks, I enjoyed watching your videos of all those cats en masse. Look forward to the updates.
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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

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Re: New group of 6 Microglanis iheringi... or are they?

Post by OregonOutdoorsChris »

That video is really interesting!

I have custom red lights (660nm LEDs) on my tank for nocturnal viewing, but still the single Microglanis I have is absolutely photophobic. I can sometimes catch a brief glimpse of it diving for cover only if I sneak up on the tank and use a flashlight after ALL the lights in the tank and room are out. I might see the fish once every 6 months if I'm lucky.

But here in your video, with them in a large group, they seem to be acting a lot more like perugiae. Still nocturnal, but that's infinitely more outgoing than I'd ever expect given my experience so far. It seems that large groups definitely help!
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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

Did a check on the fish today. Biggest fish was pushing 70mm SL. Still a bit shocked they haven't spawned yet.
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Re: New group of 6 Microglanis iheringi... or are they?

Post by Jools »

They look in top condition. How do you know they've not spawned?

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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

I suppose they could have, but if they did, they've eaten every last fry and egg. Perhaps to that end, a few weeks ago I looked in the tank of the smaller fish and I saw what I believed to be an egg on a spawning mop. I looked again and still saw it. I looked a third time with a flashlight, err, torch, and still saw it. I ran to get my phone and when I returned it was gone. This occurred in daytime, so I doubt any fish swam out to eat it in less than a minute. But I tore that tank apart and never found any egg. Perhaps I mistook a fragment of decaying leaf (with its transparency) for the egg. There are always leaf fragments stuck in the mop and in the past I have mistaken them momentarily for eggs, but upon inspection could see they were not. The bigger mystery is how could I have looked at this with a torch and still mistaken it for an egg?

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Re: New group of 6 Microglanis iheringi... or are they?

Post by fishguy1978 »

bekateen wrote: Sat May 22, 2021 4:48 am Did a check on the fish today. Biggest fish was pushing 70mm SL. Still a bit shocked they haven't spawned yet.
Love those happy little faces
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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

Today I found what I thought was an egg on a spawning mop. The object looked like an egg, was about the size of an egg (although bigger than what I'd expect from such small fish) and it was attached to the spawning mop like an egg might be. But I discovered the object was essentially a hollow bubble of some hard outer material, and when I released it from the mop, it floated. Perhaps it is some odd contaminant from a recent meal of frozen blood worms? (I had just fed a frozen meal to the fish 30 minutes before). Anyway, it's not a Microglanis egg :-(

Also, I wanted to give better (although not more in focus, since these fish don't stop moving) views of my fish to a few people, so I'll upload them here for easy access.

Cheers, Eric
Attachments
Egg-like object
Egg-like object
Egg-like object another view
Egg-like object another view
type 1 45mm SL
type 1 45mm SL
type 1 45mm SL_same fish
type 1 45mm SL_same fish
type 2 45-50mm SL
type 2 45-50mm SL
type 3 45-50mm SL
type 3 45-50mm SL
type 4 45-50mm SL
type 4 45-50mm SL
type 4 45-50mm SL_same fish
type 4 45-50mm SL_same fish
type 5 50mm SL
type 5 50mm SL
type 6 55mm SL
type 6 55mm SL
type 6 55mm SL_same fish
type 6 55mm SL_same fish
type 7 60mm SL
type 7 60mm SL
type 8 70mm SL
type 8 70mm SL
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Re: New group of 6 Microglanis iheringi... or are they?

Post by Woodh »

Did you ever solve the egg mystery?
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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

No, other than no fry were fine yet. I suspect it was a plant seed coat.

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Re: New group of 6 Microglanis iheringi... or are they?

Post by bekateen »

Found a seller in Iquitos offering "Microglanis poecilus."These are collected somewhere in Peru. They look a lot like M. poecilus, but not exactly the same in my opinion. So I'm referring to them as Microglanis aff_poecilus.

I bought 25, but I think I got a few more. The seller said they gave me extra. My problem is that I need to get them home to the USA. Hopefully all ship well.

More than anything else (other than they DON'T look like some kind of inheringi type, LOL), what I'm digging is the dramatic upper lobe extension on the caudal fin! Every specimen I got has it, to some extent. Beautiful! I wonder if the extent of the trait is sexually dimorphic?

Cheers, Eric

P.S., I hesitated before adding this post to my ongoing thread about Microglanis iheringi and what is/isn't the real thing. I considered starting a new thread entitled, "New group of 30 Microglanis poecilus... or are they?", but I thought better of that. =))

P.P.S., now I'm up to nearly 90 Microglanis, probably constituting 4 species.

Cheers
Attachments
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20210712_140910~2.jpg
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Re: New group of 6 Microglanis iheringi... or are they?

Post by fishguy1978 »

Wow, if you don't get some spawning action with those numbers you might need to add some more. =))
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