H. Punctatum or D. Longibarbis?

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MissNoodle
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H. Punctatum or D. Longibarbis?

Post by MissNoodle »

in a debate with someone.

What is this catfish?

Several photos attached:
20200703_164819.jpg
20200630_130714.jpg
20200723_215029.jpg
20200726_201808.jpg

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bekateen
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Re: H. Punctatum or D. Longibarbis?

Post by bekateen »

Hmmm. This is difficult. My first thought is Dianema longibarbis because the eyes seem to be too big to be Hoplosternum punctatum. However, from the photos of D. longibarbis, it appears they have some larger dots along the midline, which I don't see on yours. Also, your fish's eyes seem to be above the midline of the body, and your dorsal spine seems short, so I'm leaning towards H. punctatum. I don't know how variable the adult D. longibarbis spotting pattern can be. To confirm, get more photos: 1) of the dorsal fin spread upright (although books say the dorsal spine is the same height as first ray, all the photos here on PCF show it's not exactly so). 2) better straight side view of body, so see relative position of eyes.

Cheers, Eric
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MissNoodle
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Re: H. Punctatum or D. Longibarbis?

Post by MissNoodle »

Photos with dorsal up
20200705_205sjf310.jpg
20200705_163744.jpg
20200627_121144.jpg

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MissNoodle
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Re: H. Punctatum or D. Longibarbis?

Post by MissNoodle »

And for side view
20200724_212012.jpg

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MissNoodle
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Re: H. Punctatum or D. Longibarbis?

Post by MissNoodle »

bekateen wrote:
Mon Jul 27, 2020 5:52 pm
Hmmm. This is difficult. My first thought is Dianema longibarbis because the eyes seem to be too big to be Hoplosternum punctatum. However, from the photos of D. longibarbis, it appears they have some larger dots along the midline, which I don't see on yours. Also, your fish's eyes seem to be above the midline of the body, and your dorsal spine seems short, so I'm leaning towards H. punctatum. I don't know how variable the adult D. longibarbis spotting pattern can be. To confirm, get more photos: 1) of the dorsal fin spread upright (although books say the dorsal spine is the same height as first ray, all the photos here on PCF show it's not exactly so). 2) better straight side view of body, so see relative position of eyes.

Cheers, Eric
Id also like to point out, the links on the longibarbis page comparing the species no longer work

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bekateen
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Re: H. Punctatum or D. Longibarbis?

Post by bekateen »

MissNoodle wrote:
Mon Jul 27, 2020 7:19 pm
Id also like to point out, the links on the longibarbis page comparing the species no longer work
Thanks. Yeah, I noticed that too as I studied the photos. I'll follow up on that.

As for your fish, after seeing your extra photos, I still think it's Hoplosternum punctatum. I picked one of your photos. It shows the upward placement of the eye relative to the body (for reference I drew an arbitrary straight line from the middle of the caudal peduncle through the snout).

All that said, this photo also shows the spots along the midline which I see in other Dianema longibarbis photos. #-O :-\ ... Nope, I'm not falling for it. I'll still say Hoplosternum. :))

Cheers, Eric
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Your fish
Dianema longibarbis from CLOG
Dianema longibarbis from CLOG
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Re: H. Punctatum or D. Longibarbis?

Post by Jools »

FWIW, I agree with Eric.

Jools

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MissNoodle
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Re: H. Punctatum or D. Longibarbis?

Post by MissNoodle »

Awesome, thanks guys! That's what they were sold as and what I thought they were. The other person got told longibarbis for theirs and turns out some of them may actually be punctatum.

Either one, they're great fish and I particularly love them a lot.

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bekateen
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Re: H. Punctatum or D. Longibarbis?

Post by bekateen »

MissNoodle wrote:
Mon Jul 27, 2020 9:25 pm
Awesome, thanks guys! That's what they were sold as and what I thought they were. The other person got told longibarbis for theirs and turns out some of them may actually be punctatum.

Either one, they're great fish and I particularly love them a lot.
Don't dismiss the possibility that the two species have been co-mingled before shipping, such that your LFS has a tank full of mixed species fish. I actually contemplated whether your two fish were the same species. In the end I settled on yes, but I had to think about it.

Cheers, Eric
Image
http://youtube.com/user/Bekateen1
Would you like to buy my fish? Click HERE for prices.
Buying caves from https://plecocaves.com? Plecocaves is now sponsoring Bekateen's Fishroom. Use coupon code "bekateen" (no quotes) for 15% off your order.

User avatar
MissNoodle
Posts: 126
Joined: Thu Oct 03, 2019 8:51 pm
My cats species list: 13 (i:13, k:13)
My BLogs: 2 (i:5, p:112)
My Wishlist: 3
Spotted: 15
Location 1: Ontario
Location 2: Canada

Re: H. Punctatum or D. Longibarbis?

Post by MissNoodle »

bekateen wrote:
Mon Jul 27, 2020 11:37 pm
MissNoodle wrote:
Mon Jul 27, 2020 9:25 pm
Awesome, thanks guys! That's what they were sold as and what I thought they were. The other person got told longibarbis for theirs and turns out some of them may actually be punctatum.

Either one, they're great fish and I particularly love them a lot.
Don't dismiss the possibility that the two species have been co-mingled before shipping, such that your LFS has a tank full of mixed species fish. I actually contemplated whether your two fish were the same species. In the end I settled on yes, but I had to think about it.

Cheers, Eric
I've got 3 total

Brief video of all 3

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