Ancistrus ID please?... And they spawned. :-)

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Ancistrus ID please?... And they spawned. :-)

Post by bekateen »

MODERATOR'S NOTE: This thread was split to move the spawning and rearing posts to the South American Catfishes (Loricariidae - Plecos et al) forum: Ancistrus sp. Rio Ucayali spawned. :-))


Hi All,

I picked up six of these Ancistrus, ranging in size from about 1.75" SL to about 2.5" SL. The smallest individuals have a black body with pinpoint silver-green iridescent spots and burnt orange (red-brown) color on tail and pectorals.

The middle size fish have a transitional color with the iridescent areas expanding into short curly lines, and beautiful burnt orange (red-brown) colored fins, with a black seam along the middle of the caudal fin edge.

The largest fish is almost all burnt orange (not so red any more). The iridescent spots have blended and the black has almost disappeared except for pinpoint black dots on the body.

I thought the smaller fish look similar to or . But the middle sized and larger fish look like nothing I've seen.

The LFS does not know what they are, but knows they were expensive as Ancistrus go.

Any thoughts?

Thanks, Eric
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Last edited by bekateen on 02 Jun 2018, 18:02, edited 5 times in total.
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Re: Ancistrus ID please?

Post by bekateen »

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Re: Ancistrus ID please?

Post by panaque »

They look amazing. I also have never seen any like this so I can't help with ID.
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Re: Ancistrus ID please?

Post by Jools »

From time to time you see calico variants like this. I guess you need to grow them out and see what they do. They are pretty.

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Re: Ancistrus ID please?

Post by bekateen »

Thanks.

If I can make a prediction, I think they are all going to end up being the calico orange color - I know calico-colored "common BNs" are readily available, but I've never heard of a calico BN with a head and tentacle phenotype like those of A. sp. Rio Ucayali and A. hoplogenys. Neither have I heard of a BN starting out with a "wild-type" color pattern and then changing to calico. The closest thing I can envision is how species like and change from dark to yellow as they age. (and sometimes they go back to their dark color... if it's the same phenomenon, will mine? Who can tell! :-D)

Although the LFS recalls they are wild caught, at the same time, they are not sure of the ID when purchased. And now they aren't even positive about which wholesaler they came from - possibly Ruinemans Florida; with that realization, the LFS is no longer certain about them being WC.

Currently, it is just my hypothesis that these are transforming colors from a A. sp. Rio Ucayali or A. hoplogenys pattern to the orange calico. My idea is based on two observations:
  1. The color diversity in the tank, and how it segregates by size. All of the smaller fish are the dark blackish-brown color with pinpoint iridescent spots and red edges/stripes on fins. The intermediate sized fish have less black, more red, and larger iridescent patches. In the largest fish, there's almost no black, except in tiny condensed spots; and the iridescent spots are still slightly distinguishable, but they have blended in with the orange to create the odd color pattern. If these color patterns were not a progression, I wouldn't expect them to assort so perfectly with size, but rather be randomly present in fish of different sizes (some orange small fish and some black big fish).
  2. When the fish first arrived in the LFS (a month or two ago is the first time I saw them), all of the fish were small and all of the fish were the blackish-brown color with red-edged fins and fine iridescent spots. That means the orange and intermediate colors have developed since the fish arrived, and it means the fish that are currently orange used to be the blackish-brown color.
I'm not surprised by the possibility that there could be calico mutants in any species strain. What surprises me, if my hypothesis about color change is correct, is that these fish would progress through what looks like an otherwise "normal" color pattern as seen in A. sp. Rio Ucayali and A. hoplogenys (and a few others, see this COTM), instead of being born with an immature calico color pattern that just matures as the fish grows.

As you observed, only time will tell. Not only do I want to see how these grow out, but I also hope that they will breed for me so that I can witness the re-occurrence of the color transformation from start to finish.

Cheers, Eric
Last edited by bekateen on 27 Dec 2017, 01:39, edited 2 times in total.
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Re: Ancistrus ID please?

Post by bekateen »

Here are two of the smaller fish this morning. Looking at the tail spots on the one fish with less red in the tail, I think the spotting pattern looks a lot like the pattern of A. sp. Rio Ucayali, moreso than the tail of A. hoplogenys.

Cheers, Eric
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Re: Ancistrus ID please?

Post by YSR50 »

https://youtu.be/Br5dvxydlCI?t=9m30s

edit: Just read your reply on youtube. Thought we had a match
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Re: Ancistrus ID please?

Post by bekateen »

You have a very good eye to connect my fish with the Aquarium Co-op video of Eric Bodrock's talk at Cataclysm.

The fish shown in that video belong to Danny Blundell in the UK. He's seen my video and he tells me that although my large fish looks similar to his, he says it is not the same as his. Also, he's spawned his orange Ancistrus, and his juveniles do not look anything like my smaller fish.

I wish my fish had been the same as his, because that would have solved my dilemma trying to ID my fish. :-)

Cheers, Eric
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Re: Ancistrus ID please?

Post by bekateen »

If I can collect fin clippings, is anyone (who is able and willing to do DNA testing) be interested in ID'ing these Ancistrus? Is there enough pre-existing, known DNA data on other Ancistrus species to be able to put an unknown group (these fish) into systematic context?

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Re: Ancistrus ID please?

Post by bekateen »

The big fish is blackening a little as it settles in. But still more orange/red than anyone else. Everybody is eating well. :-)
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Re: Ancistrus ID please?

Post by Fundulopanchax76 »

Maybe some kind of hybrids ?
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Re: Ancistrus ID please?

Post by bekateen »

Don't know yet. Honestly, given the classic coloration of the smallest fish, I don't suspect hybrids.

My guess is either (1) if wild caught (as initially reported by LFS), then these may be a particularly colorful localized population of something like A. sp. Rio Ucayali. Or (2) if captive bred (which I'm still not sure about either, since LFS reported wild caught), then I can imagine that these are a color variant resulting from inbreeding of a small population of fish of the same species which had unusual color to begin with.

Since even the largest fish is still pretty small ~62-65mm SL), these are just my ideas for now... no factual evidence for either option other than the observation that the smallest fish really do resemble almost perfectly normal A. sp. Rio Ucayali.

Cheers,
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Re: Ancistrus ID please?

Post by bekateen »

Colorwise, I suppose we can call it a seven-point variety. :-D

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Re: Ancistrus ID please?

Post by Birger »

Or (2) if captive bred (which I'm still not sure about either, since LFS reported wild caught)
I have seen enough tanks full of as posted wild caught albino fish that I pay no attention to it unless I absolutely trust who is saying this.

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Re: Ancistrus ID please?

Post by bekateen »

Birger wrote: 26 Dec 2017, 23:32I have seen enough tanks full of as posted wild caught albino fish that I pay no attention to it unless I absolutely trust who is saying this.
Agreed. I'm not holding my breath that these are wild caught.

The bottom line is that the LFS orders both WC and captive bred fish, from several different and mostly reliable sources, but the owner can't recall with certainty which source provided these specific plecos; therefore, since he's not sure of source, he's acknowledged that he can't know if WC or captive bred... All he was sure of was that they cost a lot for a bristlenose. I'd guess that the odds are about 50-50 that these are captive-bred in Czechoslovakia, but I'd reduce the odds down to about 5% that these are wild.

My bigger point is that I seriously doubt they're interspecific hybrids. Line bred? Quite possibly. If only I could find someone qualified and willing to process a fin clip for DNA analysis to determine what these are most closely related to.

Cheers, Eric
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Re: Ancistrus ID please?

Post by bekateen »

Sorry for so many pics. I keep thinking if I try again, I'll get a perfect photo without yellow and with fins flared. This pic is with a flashlight in one hand and with camera flash too. The extra flashlight created a spotlight effect on the fish (uneven, concentrated lighting) but did get rid of most of the yellow tint.

This is one of the mid-sized fish and a smaller one too.

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Re: Ancistrus ID please?

Post by bekateen »

The smallest look like pretty normal .
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Re: Ancistrus ID please?

Post by amazonaquatics »

Love these guys. There are so many undescribed Ancistrus out there, it’s great to see some entering the hobby! Good luck!
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Re: Ancistrus ID please?

Post by bekateen »

UPDATE:

After continuing talks with my LFS owner and with the two companies he recently got shipments from, it appears that these fish are the captive-bred sold by Petra Aqua in Czechoslovakia, rather than any wild-caught fish from Ruinemans.

Although the lovely and striking (but atypical) red fins persist in my fish, the spotted orange color of the largest fish appears to have been just stress coloration. It's gone now and replaced by the black body and larger, coalescing iridescent spots.
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Re: Ancistrus ID please?

Post by bekateen »

These fish look different every time I look at them! 8-}
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Re: Ancistrus ID please?

Post by bekateen »

UPDATE: Here's today's photo of the largest fish, the one that looked orange on day of purchase and had odd-colored irises with pin-point pupils.
  • Body mostly black with red undertones.
  • Iridescent spots on this individual still look different than those on other individuals- more diffuse borders and irregularly shaped compared to other fish in same group. Iridescent spots might also be more numerous and consequently tightly-packed than on other individuals.
  • Fins less red than before but still bright red on tips. Still looks like a 7-pointer.
  • White highlights on fin reduced but still present.
These fish are growing quickly. Not as peculiar looking as on day of purchase, but still beautiful. I'm eager to get these to breed and see if the babies go through the same color phases as the parents did when they were smaller.

Personal reflection on my OP: I got the developmental color progression flat-out wrong. These fish weren't all transitioning to orange; perhaps the orange may have been the stress coloration.

Cheers, Eric
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Appearance on Dec 20th
Appearance on Dec 20th
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Appearance on Feb 4th
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Re: Ancistrus ID please?

Post by bekateen »

Today's pictures.

At least two males have fast-developing bristles going up the face.

I think the second one is a female. Flared dorsal fin looks nice.

I couldn't measure the largest fish today (the big orange fish on day one), but I measured the second and third largest fish today. They are both over 70mm SL (over 2cm longer than when purchased two months ago); the largest male is 75mm SL. How big do they need to get before they'll spawn? :YMDAYDREAM:

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Male: Appearance on Feb 19th
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Female?: Appearance on Feb 19th (same fish as pictured above, Feb 4th)
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Re: Ancistrus ID please?

Post by Fundulopanchax76 »

What is the earliest age Ancistrus genus start breeding ? Does somebody know ?
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Re: Ancistrus ID please?

Post by bekateen »

My albino BNs were this size when they started, but interspecific comparison means little in this context.
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Re: Ancistrus ID please?

Post by Jobro »

My L183 took about 3 years :-/
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Re: Ancistrus ID please?

Post by bekateen »

Jobro wrote: 21 Feb 2018, 12:07My L183 took about 3 years :-/
Were they wild caught or captive bred?

My wild caught maccus took 2-3 years also, but their F1 fry took just over one year.
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Re: Ancistrus ID please?

Post by MarlonnekeW »

I only have experience with one Ancistrus species, L159. They were captive bred and spawned for the first time 7 months after I got them. I'm not sure how old my fish were when I bought them, but if I look at my own fry, I would say between 3 and 5 months old. That would mean they were between 10 and 12 months old at the time of the first spawn.
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Re: Ancistrus ID please?

Post by Jobro »

bekateen wrote: 21 Feb 2018, 14:37
Jobro wrote: 21 Feb 2018, 12:07My L183 took about 3 years :-/
Were they wild caught or captive bred?

My wild caught maccus took 2-3 years also, but their F1 fry took just over one year.
They were tank bred. Took the males 2 years before they showed bristles...
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Re: Ancistrus ID please?

Post by bekateen »

Woke up to this site a few minutes ago: A male facing out of a cave, with another Ancistrus trapped behind him. Does this species trap with the male in the cave tail-first? :YMPRAY:

Cheers, Eric
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Ancistrus maybe trapping 2018-04-07.jpg
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Re: Ancistrus ID please?

Post by bekateen »

Update on the Ancistrus sp. Rio Ucayali. Largest male 85mm SL. Largest female (the orange fish on day of purchase) 75mm SL. Comparing males I see some (e.g., largest male) have only bifurcating bristles, while others (two smaller males) have trifurcating bristles. If it was an age/size/dominance feature, I'd expect the reverse pattern. Is it genetic? Has anyone else noticed such a difference before?
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Variation in bristle shape
Variation in bristle shape
The five largest specimens
The five largest specimens
Variation in bristle shape
Variation in bristle shape
Largest male
Largest male
Largest female
Largest female
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