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New "common pleco" overeating?

Posted: 08 Mar 2004, 06:49
by Elspeth
I got a little ahead of myself and aquired my "common plec" yesterday afternoon. Not a problem as "she" (assigned gender, I have no actual clue) is still tiny and will move out of the interim/quarantine tank into a 120 gallon shortly.

However, I have many questions. She is temporarily housed in a cycled 50 gallon with a lot of brownish algae. I expected I would need to feed her (commercial algae wafers and a nice fresh zucchini already purchased), though I *hoped* she would find the existing algae edible.

From this picture, I am assuming that our house brand of algae is, indeed, very acceptable:
Image

Twenty-four hours ago this fish did NOT have that huge belly. The poop trail also seems a bit of a giveaway.

Do I need to be concerned about her eating TOO MUCH? Or should I allow her to continue "cleaning up" the tank and start judicious feeding when the tank looks "grazed down" and she looks less overfed?

Also, this fish came from a chain petstore which labelled them H. plecostomus. I suspect this or H. punctatus is correct, just from reading I've done here trying to figure out what a "common plec" really is. I had wondered about ID a bit as the "commons" in local petstores seem darker, more nearly black/grey, than the ones pictured in the cat-eLog. Today she seems a little lighter and a little "browner" than yesterday. Lighting and background may have a lot to do with it (she is now in a less brightly lit tank with floating plants) but obviously I will need to know -- what do changes in color mean in this species? Was the darker and less brownish color that of somewhat stressed fish (ordinary petstore setup - bright lights, many many little plecs, no hiding places), in which case the browner tinge is A Good Sign? Or is it the other way around (lighter=stressed)? And if the latter, is there anything I can do to reduce stress? Her tank is at 76F, pH 7.0, no ammonia or nitrites, floating anacharis, anchored anacharis, and several ornaments providing hiding places. No wood yet, but there will be soon. For tankmates, she has a shoal of 12 very small tiger barbs.

Posted: 08 Mar 2004, 08:38
by DeepFriedIctalurus
Honestly I don't think one of these little guys (gals?) could've possibly had it any better. Don't worry about overfeeding since this is still a small fish in a good-sized tank, and herbivore plecos are evolved to go through alot of food....the string tells the tale. Just start feeding it when the algae is less visible since it's most assuredly eating a little of the barbs' food too.

About what your fish is, is the most likely species. The next most common from what I see is , but it's pattern is more wavy lines than spots. Followed distantly by assorted Hypostomus spp. (much less than 1 in 10 I see is a Hypostomus).

And the color change is completely normal, it's usually to match the surroundings. Direct stress colors are usually light & dark blotchy for most ple cos. But I have seen Liposarcus very dark in stores while in obvious discomfort, possibly trying to camoflauge themselves among the others since there's almost always too many there. Or...a response to shipping/acclimatization stress.


Tyler

Posted: 08 Mar 2004, 13:43
by Sooty
I think its a case of "being in algae heaven" for her... :P
I find that when I purchase pl*cos etc, they are nearly always mal-nourished... ppl dont seem to either feed them or know how to feed them properly?

So, yours has found the green green fields of algae a real treat....
And yes, algae does pass through the system quickly.... if only we ..... :lol:

Posted: 08 Mar 2004, 16:51
by Elspeth
Aha, this is a case of a Happy Fish! :P "Tess" will be pleased to learn that she is NOT going to be removed from the fields of algae, or vice versa, and put on a diet.

You folks are really sharp. Checking it out in the Cat-eLog, Liposarcus pardalis is a much closer match than the claimed Hypostomus. I'm pretty sure she's spotty not stripey (I'll have to wait for her to come out and about again to be sure I'm remembering correctly). That would also explain why none of the Hypostomus I was looking at really matched very well.

What does one look at in identifying catfishes? I'm sure experience counts, as you can simply recognize a familiar species the next time you see it, but how does one start out? Is there a "key to the catfishes" somewhere?

Posted: 09 Mar 2004, 05:23
by Sooty
The best way I find to identify a catfish is "someone else". :lol:
Seriously though, Aqualog has released the lastest "complete" L number book... get a hold of this as its a real gem for those that like to watch! :wink:

We are very limited here sometimes in what we have "quick" access to, and catfish books, especially Loricariidae are not easily accessable- this site is your best resourse by far!!!

Experience is always key I say, but with so many new sp. and crossbreeds coming along, its sometimes alittle difficult if a picture doesnt let you know its a crossbreed? :evil: