I bought these for my Neocaridina shrimp in the community aquariums. They are actually very durable and offer enough cover for my shrimp and smaller fish. I would advise being cautious with bettas or fish of this size as the holes in these rocks are fairly close to their body size and could potentially trap or injure someone attempting to ambush. All in all I would definitely buy them again. especially if the price was a little lower! (You know that we crazy fishermen who like multiple tanks have to buy a lot more food than most.)
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