Notorus Flavus? (Stonecat)

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Braxtonite
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Location 2: Eastern PA

Notorus Flavus? (Stonecat)

Post by Braxtonite »

Just collected these from a creek in Eastern PA for a coolwater grow out tank. Are they Stonecats? In that case I suspect my platies aren't long for this world
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bekateen
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Re: Notorus Flavus? (Stonecat)

Post by bekateen »

Hi Braxtonite,

Yes, those look like madtom catfish, genus . Which species, I'm not sure. Where in Eastern PA? Can you please get more pics of the fish when they settle in your tank?

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Re: Notorus Flavus? (Stonecat)

Post by Narelle »

I can only see identifying features in one fish per picture (the fish laying along the bottom of the bag in the first, and the one swimming near the surface in the second), but at least that fish is . Most likely they are both the same, but clearer pictures would be necessary to confirm.
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Braxtonite
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Re: Notorus Flavus? (Stonecat)

Post by Braxtonite »

Thanks for the info guys. I sure hope they're N. insignis. I'll try to grab some pics later but these guys are extremely nocturnal. I haven't seen any daytime activity the past 4 days but I suppose that's how most catfish in the hobby started out.
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Re: Notorus Flavus? (Stonecat)

Post by Narelle »

Braxtonite wrote: 10 Nov 2021, 12:52 I sure hope they're N. insignis.
At least the one is definitely N. insignis! I can confirm that with certainty.

(These particular madtoms, in PA, are very familiar to me – I did my undergrad in fisheries in PA, have collected and kept N. insignis, and did research on N. flavus.)

It’s just that I can only see defining features in one fish per picture, so I can only confirm you have one N. insignis. (As I said before though, most likely they are the same.)
Braxtonite wrote: 10 Nov 2021, 12:52 I haven't seen any daytime activity the past 4 days but I suppose that's how most catfish in the hobby started out.
Having kept these before, they are definitely very reclusive. You pretty much just see them when they come out to feed, but they will feed in the day time if they get used to that schedule. Mine took readily to Fluval Bug Bites pellets as the main staple for their diet, but also appreciated live blackworms, frozen bloodworms, and Repashy gel food.
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Graduate student, studying systematic ichthyology.
Braxtonite
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Joined: 06 Nov 2021, 19:00
Location 1: United States
Location 2: Eastern PA

Re: Notorus Flavus? (Stonecat)

Post by Braxtonite »

Good to know. I caught some video of the big one coming out when I fed some earthworm. How big do they get? I caught a big one at the creek but it was covered in white nodules so I released it, fearing disease. They seem like a fish with a slow metabolism and low bioload; did you find that to be the case when studying them? (I wouldn't mind reading that study if you wanna link it) Samsung cloud link: https://linksharing.samsungcloud.com/qlaIhKFlqauL
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