1、[Transparent] The fish breeding box is made of acrylic material, high brightness and transparent, easy to observe the status of fish at any time. 2、[With Lid] Fish breeding isolation box features a unique transparent acrylic lid to prevent fish from escaping and guard newborn fish. 3、[Guard The Small Fish] Fish tank breeding isolation box can prevent the attack of other fish and improve the survival rate of isolated small fish. 4、[Easy To Install] Fish tank incubator can be easily hung on the wall of the fish tank, the hook length can be adjusted to fit different sizes of fish tanks. 5、[Hole Design] Aquarium hatchery is designed with many round holes to allow better water flow and create a comfortable environment.