6-Tube Aquarium Acrylic Crystal Shelter House for Small Shrimp Small Fish-Shrimp Habitat, Breeding Tube Hiding Cave Hideaway , Encourage spawning

Very small, maybe I miss read but only about the size of a pea hole.

Just received my shrimp acrylic tubing and it was cracked when I opened the package.

These are really small and are perfect for my aquarium shrimp.I have my shrimp in a 150 gal tank with my community fish.Maybe around 45 fish.I have a lot going on in there so it’s plenty of places for shrimp to hide but fish can still get in.So I have a big size corner area with this tube in between some ceramic caves with holes small enough for shrimp and not larger fish.I have them all covered with chola wood to help keep the larger fish out so the shrimp won’t get eaten.I mostly see the shrimp moving around at night once I turn the lights out or switch to the blue led but they do occasionally move around in the daytime.

So far, the shrimp aren't using it...we'll see! Other small fish try to swim in it, and the tiny snails like it.

Too tiny to be useful for anything bigger than freshly hatched shrimp. When I get some we will see if they use it.

My shrimp love it, I may get another one. They crawl through it all day long!

My betta fish died because of this product.This is advertised as a shrimp hideaway, yet my betta fit in. He cut himself badly on the sides of it and died as a result of his wounds. Bettas are curious fish and this could happen to any other betta owner. Do not get this with any fish the size of a betta. Your shrimp can fit, but so can many fish.

I wanted to use this in my aquarium but it is tiny no size was given! My fish would get stuck in this! I do not like stuff from China it is never like they show just took my money teeny tiny look at the picture they advertise not the same! Ugh!!!!!! First time Amazon let me down!