Auchenipteridae:Trachycorystes trachycorystes Profile and breeding attempt.....

koltsixx

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The Auchenipteridae family have some beautiful and interesting representatives in the hobby, Gulper Cats/Asterophysus batrachus, Jaguar Catfish/Liosomadoras oncinus, False Jaguar Catfish/Liosomadoras morrowi, Zamora Woodcat/Auchenipterichthys coracoideus and the Ageneiosus cats such as marmoratus . One of the lesser known members is Trachycorystes trachycorystes a personal favorite of mine and due to some inspiration from fishopolis I decided I would try and breed the two I have and figured as long as I'm documenting the attempt I might as well also give a quick profile for them.

Trachycorystes trachycorystes.JPG
-Common name: Black Driftwood Catfish
-Scientific name: Trachycorystes trachycorystes
-Family: Auchenipteridae
-Subfamily: Auchenipterinae
-Distribution: Amazon, Rio Solimões region, Brazil, Venezuela and Peru
-Temperature: 23.0-29.0°C or 73.4-84.2°F
-PH: 6.4-7.0
-Size: 14-17 inches
-Sexing: Males have genital papilla and do not grow as large as females as well as develop thickened barbels and larger dorsal and pectoral spines.
-Personality: An aggressive fish that requires a species tank with plenty of refuges, as this species will also attack its own congeners when it feels like it (see Reference; TFH article by K & B Teats)- sourced from Planetcatfish.com
According to Richard Hardwick, this one has the personality of a Hemibagrus wyckii on an off-day and will try to bite your hand if you put it in the tank.- sourced from a Practical Fishkeeping article Published by: Matt Clarke Friday 5 May 2006

Trachycorystes trachycorystes is supposed to be an all black catfish including their undersides and the specimens I possess lack that distinction as their undersides are white. So I'm unsure if my Trachy's are indeed Trachycorystes trachycorystes, which may explain my different experience in keeping them and their personality. My specimens have always been very peaceful even among themselves when disputing over a hide. The only thing to be concerned with is maintaining them with appropriately sized tankmates as they will prey on other fish. Though I will also state that despite an extremely large mouth they have at 12 inches ignored anything 5-6 inches and larger in my experience. Another thing to note is that these cats need a tight fitting hide in order to feel secure. Their natural defense from predators is to cram themselves between wood or into logs and erect their spines making removal from their resting place by would be predators nearly impossible. Failing to supply them with such a hide creates a lot of stress and they will never cease looking for shelter and will wedge themselves between any tank equipment they can often times dislodging heaters and intakes as well as try to hide behind one another. Another notable habit of theirs is their ability to create sound. The sound is similar to frogs croaking and is often used during territorial disputes.

Brief history of my Trachycorystes-I had originally started out with 4 Trachycorystes from Rich/Infinite Aquatics(miss you man). They arrived 3/7/2008 and I sold 2 sometime between there and now and the 2 I have left are currently the oldest fish in my collection at about 6 years of age, both are currently approx. 11-12 inches.

The reason for me writing this thread and attempting to breed my Trachy's was because fishopolis was under the impression that I may have lucked out and my 2 Trachy's are 1 male and 1 female based on this pic. Fishopolis noted the thickened genital papilla and how it was pressed against the other Trachy's genitals, taking on a position one would imagine they might take during mating. Fishopolis believes that them entwined this way was a good sign for possible breeding and even suggested I contribute the pic to Planetcatfish.com while trying to obtain more info on breeding.
IMG_3948.JPG
In this close up pick I believe you can see how the males anal fins first ray is thickened to the point of appearing to be a tube.
IMG_3948#3.JPG
Planetcatfish had an article in Shane's World about how to sex catfish including Auchenipteridae but the images have all disappeared. So upon doing some looking around myself I saw other Auchenipteridae profiles where the the pics where labeled male and female and they show the differences in the anal fins. In the Auchenipterichthys coracoideus/Zamora Woodcat profile they show a male and female side by side so you can see the modified anal fin in the male and how the females compares. http://www.planetcatfish.com/common/species.php?species_id=352

Now interestingly the 2 Trachy's got locked like this during a feeding incident where they both went for the same pellet and one's whiskers got caught in the others mouth and they refused to let go. Still now knowing that I probably have a male and a female and that the males instincts are there and isnpired by fishopolis's suggestion I decided it would be worthwhile to try an breed them. So this thread will document my hopefully positive progress.

IMG_3948.JPG

Trachycorystes trachycorystes.JPG

IMG_3948#3.JPG
 

krichardson

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I forget his name but how about contacting the guy at Planetcatfish?
 

koltsixx

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I forget his name but how about contacting the guy at Planetcatfish?
Thanks for the suggestion, fishopolis also suggested contacting Julian at planetcatfish but there's no direct way that I could find to contact him. I did see how ever that if one wants to contribute the site suggests contacting a Mod which I did so we'll see what happens.
 

thebiggerthebetter

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koltsixx

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Very unusual and interesting stuff. Nice write-up.

Julian Dignall's email was (still is, hopefully) webmaster@planetcatfish.com
Thanks and I'll definitely give that email a try.

Presently I've sold some stock so I gave the Trachy's their own tank and am currently ordering some fake plants for the tank to help diffuse the light so they might be more comfortable. I'm also considering that since the little info. on them says they are "acidophiles" I may also attempt lowering the PH of the water as well as maybe add blackwater extract or just add some untreated driftwwod to the set-up as well as increasing the amount of fatty live foods I offer.
 

koltsixx

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Not sure where either of you are located, Shane from Planetcatfish.com (Shane Linder) is going to be a speaker at AquaMania 2 (www.capitalcichlids.org/aquamania)

He's a really nice guy and I'm sure answer any questions that he can answer!

Matt
Unfortunately do to a back injury and surgery I'm pretty limited on what I can do for the next couple of months but thanks for the suggestion as I would've loved to go if I could. I also apologize for taking so long to respond, I've been side tracked by other threads on here and have been waiting on a response from Planetcatfish so I could provide more info. pertinent to the thread.



By the way TBTB I did email Julian Dignall using the address you posted and got a response. I've also created a thread on Planetcatfish regarding these guys and currently it's being discussed what the true identity of these cats might be. Due to the white belly and demeanor of the fish it's possible that these might be a undescribed sp. of Trachy or as others have suggested a Liosomadoras. The threads gotten decent attention over there and I'm happy as there are a lot of possibilities as to i.d.ing these guys as well as possible breeding. I may even have to hit up Rich and see if he remembers where these guys where supposed to be sourced from as he's the one who brought them in. I've also had a set back as the female and male have gotten into a skirmish over a hide and the male took a horrible beating, blood was literally in the water. The male how ever is healing at a phenomenal rate but the female who basically came out unscathed has stopped eating. I've increased the temp. and am holding out a couple of days of no feedings to give her time to get settled and then may try some live food(worms) or frozen(silversides) to see if I can coax her into eating.
 
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koltsixx

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Subbed :popcorn:

Nice pics btw
Thanks man, I'm actually pretty stoked as even if they're just a variant of Liosomadoras I might be the only one to have them in captivity. If they are a Liosomadoras variant, Liosoma's common name is Jaguar Driftwood Cat then maybe this guy can be the Panther Driftwood Cat. :D

Here's a quick vid of them in their old community they make an appearance around the 6:50 mark.
[YT]_lQ_6bs8ylY[/YT]
 

koltsixx

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Update: I may have to change the name on this thread as presently more of the members on Planetcatfish are leaning toward my specimens possibly being the newly described Trachycorystes menezesi whose sole congener is T. trachycorystes. The other possibility of my specimens being Liosomadoras is probably eliminated since my Trachy's have 8 branched pelvic fin rays which Liosomadoras does not and is a definitive way of differentiating between the two. Defining characteristics that led to the members on Planetcatfish to initially believe that my Trachy's may not be T. trachycorystes is the lack of a longer lower jaw, lack of ventral and dorsal coloration being the same uniform coloration(black or brown). Within the Trachycorystes genus there was 3 known species Trachycorystes cratensis, Trachycorystes porosus, Trachycorystes trachycorystes. In 2007 T. Porosus and T. cratensis where placed within the genus Trachelyopterus (Ferraris, 2007), leaving T. trachycorystes the only member of the genus until the discovery of T. menezesi credited to Britski & Akama in 2011. Here's the paper for anyone whose interested on T. menezesi from which I sourced the following info. http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200004

Excerpt from the paper on how to differentiate between T. menezesi and T. trachycorystes: "T. menezesi can be distinguished from its sole congener T. trachycorystes by having: jaws equal in length (vs. lower jaw longer, prognathous in T. trachycorystes); skull roof covered by thick integument concealing bony sculptures (vs. skull roof covered by thin integument, bony sculptures visible); inner mental barbel thin and very short, not reaching base of outer mental barbel (vs. inner mental barbel thicker, extending to or beyond base of outer mental barbel); dorsal-fin spine serrated only along posterior margin (vs. dorsal-fin spine serrated only along anterior margin); caudal fin weakly forked (vs. emarginate); gas bladder simple, without diverticula (vs. gas bladder with three posterior diverticula, one medial and paired posterolateral)"

Which still leads to confusion as when compared to my specimens as they do share some characteristics with T. menezesi but not all those described as being different from T. Trachycorystes.
-T. menezesi has equal length jaws, while T. trachycorystes has prognathous a longer lower jaw much like lower jaw Bichirs.
-My specimens have equal length jaws +1 T. menezesi
-T. menezesi has a thick integument(natural covering of an organ such as skin) that conceals the bony structures of the skull while T. trachycorystes integument is thin.
-My specimens have a thin integument much like T. trachycorystes +0 T. menezesi
-T. menezesi has short, thin inner mental barbels(chin) not reaching the base of the outer mental barbel, while T. trachycorystes has thick, long mental barbels extending beyond the outers base
-My specimens has long mental barbels seemingly longer then even T. trachycorystes +0 T. menezesi
-T. menezesi has a weakly forked(v shaped at center) caudal(tail) fin while T. trachycorystes has a emarginate(curved more u shaped) one
-My specimens seem to have emarginate caudal fins but there has been damage to them so differentiating between the two is difficult +0 T. menezesi
-T. menesezi has a posterior(facing toward the tail) margin serrated dorsal spine while T. trachycorystes has a anterior(facing toward the head) margin serrated spine
-My specimens have posterior facing serrations on the dorsal spine +1 T. menezesi

The last difference can only be ascertained through dissection so I'm unable to verify the gas bladder differences.
 
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