:eek2:
Alright, I came home from the gym tonight and flipped both the light switches on the tank. Right in front of me was this enormous flatworm? on the side of the tank. :mixed:
My mouth dropped as I raced for my on loan digi-cam. Now as I'm fumbling for the cam, this thing has started to make a b-line for the substrate. Wormy thingy/creature from the black lagoon no likey light. I try to take two pics...damn something is wrong....grrr batteries are dying. I grab the charger toss them in. Too late this thing is already disappearing into the substrate.
I would say it took this thing aproximately 1.5-2 minutes to move 6-7 inches.
I have searched and searched the net tonight, and I've searched a flatworm dedicated web-base along with Dr. Ron's forum. Unfortunately, I cannot find something that is quite like this weird thing.
Now for a description...and bare with me...this happened really fast:
Length: 1 1/4 inch to 2 inch
Width: almost 1/4 inch to less than 1/8 inch
Height: about the thickness of a manilla folder- or 3-4 sheets of paper
The color was an off-white...identical color to southdown substrate.
The "worm" would move by extending it's body and becoming elongated- like a stretching rubber band. As it moved its length would "thin" to less than an 1/8 inch. I would say it moved at about 25 times the speed of a Trochus snail, and probably a little slower than my little nassarious snails.
The "worm" was ovular, with four distinct, rounded corners- ovular rectangle. It was not pancake shaped in any way like many flat worms. This thing looked more like a whitish leech.
The opposite side looked like it had a tad of dusky brown coloration...barely(probably a reflection of diatoms).
There were no visible appendages of any kind..none. There were no frills.
There appeared to be a faint brownish/red line going down the middle of the "worm."
I am also 90% sure this thing was feasting on diatoms on the glass.
Kinda like this but thinner(width wise) with much less dusky brown coloration- if any:
http://www.rzuser.uni-heidelberg.de/~bu6/flat0206.html
Kinda like this but with no frilly edges- and the line down the middle...extremely faint in comparison with no pronounced white:
http://www.rzuser.uni-heidelberg.de/~bu6/flat0021.html
Kinda like this with no antenae thingys and absolutely no coloration along the border.- also seemed thinner along the width:
http://www.rzuser.uni-heidelberg.de/~bu6/flat0351.html
I apologize for these not really being what I saw, but they are the closest approximations.
Now this is where I'm really confused.
Now using Dr. Ron's identification page(the description with no pics) I would surmise that this is a flatworm- Phylum Platyhelminthes, Class Turbellaria. Dr. Ron goes on to say that many of these are beneficial feeding on diatoms and detritus in the substrate.
However, Dr. Ron also goes on to state, in other articles, that most of the large polyclads are carniverous and predatory- something you don't want.
So let the fun begin...any thoughts on what I have? :rollface: