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Thomasi (L-188a) Plecostomus
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Thomasi (L-188a) Plecostomus (Chaetostoma thomasi)
Additional locales and sizes may be available!

Quick Stats

Care Level Easy
Temperament Peaceful
Color Form Tan, Yellow
Diet Omnivore
Water Conditions 72-78° F, KH 6-10, pH 6.5-7.4
Max. Size 6"
Origin South America
Family Loricariidae
Minimum Tank Size 50 gallons
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The Thomasi Plecostomus comes from the rivers and tributaries of South America. The body is light brown to gold with the scales being outlined in a darker brown to gray, giving this fish a heavily-armored look. Thomasi Plecos make good additions to any community aquarium.

Planted aquariums with hearty, fast-growing plants, high aeration, and water movement make for a healthy environment. Rocks and driftwood help to accent a natural habitat and provide hiding spaces to reduce stress for the Thomasi Plecostomus. A recommended minimum tank of 50 gallons should be provided to house this fish.

The Thomasi Plecostomus has not been bred in an aquarium and little is known about their breeding habits.

Feeding the Thomasi Plecostomus is not difficult due to the fact that it is not a finicky eater. Feeding off the bottom of the aquarium, it gets most of its nutrition from left over food and algae. If there is no algae or left over food present, supplement with high quality flake food, sinking carnivore pellets, freeze-dried bloodworms, and tubifex.

Approximate Purchase Size: 1 1/2" to 4"

Customer Testimonials

Jan C Topeka , KS
Can't say much because I never see him. I bought two - one must have died and been consumed because I never saw it or found it. It matches my gravel exactly. They hide ALL the time. They are completely non-social and boring. If he eats anything off the bottom of the tank I haven't noticed but I supposed I'd have to come out at night. Only time I see him is during a water change when I take all the "toys" out. He LOVES a cave. My other Pleco's were more social until he came along - now they all hide in a pack in the cave. They are happy like that as far as I can tell but none of your friends will ever see them. VERY PEACEFUL guy. NOW if he is clinging to the side of the tank what you will see is a completely different fish - kind of resembles a cover-girl from the 1950's - very curvy and sexy - Nearly transparent - I don't see ovaries (the one that died had ovaries that could be seen) - so I assume this is a male - THEN they are amazing creatures to look at.
Beth Roanoke , VA
This little pleco has been an awesome addition to my tank. He is peaceful and always out either eating off the side of the tank or off the driftwood. He is very healthy and overall just a very cool fish.
1-2 of 2 testimonials

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