Hi! I got my pleco when it was still quite small, and it quickly outgrew its 10-gallon tank (I know 10g is too small but I was on a budget) and I just now moved all my fish(pleco included) to a 36 gallon tank. I soon noticed my pleco is much more active, and then I noticed how BIG it is! It was perhaps 7-8 inches long on the 10g but it is now probably about 9-10 inches long! Does anyone know why it grew so fast? It's only been a week and I'm starting to get worried.


  • 1
    a pleco will grow to about 50 cm in good conditions same as goldfish and koi.but a pleco will adapt its growth to the size of your tank so it should grow a lot slower from about now and onwards. Nov 5, 2021 at 5:52
  • 1
    Related question and possibly the answer to your question: pets.stackexchange.com/q/27893/12501
    – Elmy
    Nov 5, 2021 at 6:03
  • @trondhansen it will not adapt, it will poison itself in a small tank and so grow slower... Nothing to wish the fish I assume ;) Nov 5, 2021 at 6:47


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.