Fishes near Iquitos

For those out there encountering catfishes in the wild, post your experiences here.
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bekateen
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Re: Fishes near Iquitos

Post by bekateen »

bekateen wrote: 19 Jan 2023, 23:37 The lanceolata are finally starting to macho up!
These R. lanceolata have now spawned: Rio Itaya black Rineloricaria lanceolata spawned
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Re: Fishes near Iquitos

Post by bekateen »

bekateen wrote: 27 Nov 2022, 08:36What I just got home with are: Cheers, Eric
After reading a Facebook post by Junior Chuctaya and a reply from Emanuel Neuhaus, I learned that this Peruvian Ancistrus is part of a study and as of now it's being investigated as . Note: I realize that this FaceBook post may not be visible, so I've screencaptured it and attached it here:
Facebook post (in case it's no longer visible)
Facebook post (in case it's no longer visible)

These Peruvian fish are far-flung from the type locality of sensu stricto, and the SL of the Peruvian fish is at least 4 cm longer than the max SL recorded for the Guyana populations. Molecular data is going to be important to unite or split the Peru and Guyana populations.
  • As a side comment on SL, there was a 2019 Zootaxa review of this species by De Souza et al. which has a photo of AUM 48162. The photo's caption reads "185.3 mm SL" for the specimen shown. But if you use the 1 cm scale bar of the photo to estimate the same specimen's SL, you obtain about 85 mm SL; and in the species text narrative (page 24, inside the "Specimens examined" paragraph), this same museum sample contains no specimen larger than 87.8 mm SL. I think it's pretty clear that the "185.3 mm SL" is a typographical error. So when I say Peruvian fish are 4 cm larger than the described populations, I'm going off the SL of my big male at about 140 mm SL as shown in my photo here.
Ancistrus sp. Rio Nanay big male.png
Ancistrus sp. Rio Nanay big male on ruler.png
I've had some of these for 16 months now and I'm kinda surprised they haven't yet bred. Patience.... :heart:

Cheers, Eric
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Re: Fishes near Iquitos

Post by sturiosoma »

bekateen wrote: 22 Jul 2021, 23:57
bekateen wrote: 19 Jul 2021, 02:55 We returned to the same spot off the Nanay this afternoon. Hugely successful... but you'll have to wait till at least tomorrow for pictures. Among today's catch:
Wow, did I underestimate this! 15.06 cm SL!
Eric when you go on your collecting trips do you ever take note of plants and trees growing in and around collection points most folks just check water parameters.

Jeanne
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bekateen
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Re: Fishes near Iquitos

Post by bekateen »

Hi Jeanne,

I have a few photos of the area, but I don't take close-up photos or document identities of the plants along the shorelines. In the streams where I collected, there are essentially no submerged plants. The stream beds are fine sand, leaf litter and submerged logs and branches. The shorelines are either bare mud because of human activity, or they are overgrown with long terrestrial grasses dangling into the water or in some cases there are floating mats of plants (I guess technically those are aquatic plants).

In the streams I've sampled, pH is between 4-6 and TDS is often down around 15-30ppm.

Cheers, Eric
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20210715_165030.jpg
IMGP0009.JPG
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bekateen
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Re: Fishes near Iquitos

Post by bekateen »

bekateen wrote: 14 Apr 2023, 17:45
After reading a Facebook post by Junior Chuctaya and a reply from Emanuel Neuhaus, I learned that this Peruvian Ancistrus is part of a study and as of now it's being investigated as .

These Peruvian fish are far-flung from the type locality of sensu stricto, and the SL of the Peruvian fish is at least 4 cm longer than the max SL recorded for the Guyana populations. Molecular data is going to be important to unite or split the Peru and Guyana populations.

I've had some of these for 16 months now and I'm kinda surprised they haven't yet bred. Patience.... :heart:

Cheers, Eric
These Ancistrus are now spawned. Details will be posted here: https://www.planetcatfish.com/forum/vie ... hp?t=51736
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Re: Fishes near Iquitos

Post by bekateen »

Trip #3: I'm back in lquitos at the Amazon Research Center for Ornamental Fishes to work, this time for four weeks. My first catch: I think it's another , just bigger than the four adults I have from my last trip. In the river, when we first caught it,
my quick view made me think initially that it might be a different species or even genus because of its larger size. We were at or near the type locality of , so I was hopeful for that, but this photo seems to say, "not that."
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bekateen
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Re: Fishes near Iquitos

Post by bekateen »

Seen at Stingray Aquarium today, being sold as , although that's not correct since these fish have a dark spot behind the base of the dorsal fin spine.

Direct link: Ancistrus spp... being sold as Ancistrus temminckii

Cheers, Eric
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Re: Fishes near Iquitos

Post by bekateen »

Today we fished the main channel of the Rio Itaya. Caught Hypoptopoma, lots of Pims, one small shovelnose, two striped raphaels, some mouse cats, and one novel . This specimen is unlike the green- spotted Ancistrus we caught before (HERE) and the more common- looking from the area. I've never seen this species around Iquitos before. Reminds me of a punctatus-like .

Ancistrus sp. from the Rio Itaya southwest of Iquitos, Peru

Cheers, Eric
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Re: Fishes near Iquitos

Post by bekateen »

Caught a few of these in the Rio Itaya main channel. Can't figure out the ID. Locals call these "hauxwelli," but these aren't . That said, we also caught some Loricariichthys, which might be .

Two fish are shown. The first one is much larger than the second.

Larger fish:
20240813_142856.jpg
20240813_142844.jpg
20240813_142827.jpg
20240813_143026.jpg
Smaller fish:
20240813_142353.jpg
20240813_142509.jpg
20240813_142441.jpg
20240813_142448.jpg
20240813_142412.jpg
These fish are nothing like the Rineloricaria we caught either in 2022 [HERE] or 2021 [HERE] and [HERE], although they were all collected near each other. In my opinion, these are probably the least interesting (in regard to pigmentation) of the Rineloricaria species here.

Cheers,
Eric
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Re: Fishes near Iquitos

Post by Jools »

The top one looks a lot like which I collected around the Iquitos area IIRC. The contrast oon my pic is high and that fish is also settled and not on a white backgrond.

Jools
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