Another option to consider is the Patagonia Quandary, which comes close in breathability while offering a step up in durability and all-around build quality
Better for the fish and you Barbless hooks are much better for the fish since they are less damaging and easier to remove
It is made from durable, lightweight, recy
You also get the split pocket for storage on the underside of the flap, which at this size becomes very useful
Dimensions: 21 x 8 x 12 inches | Gallon Capacity: 5 | Material: Plastic case with glass sides | Accessories: Integrated lights, filter media (sponge, zeolite, carbon) | Inhabitants: Betta, small school, shrimp Best for Bettas Fluval Betta Premium Aquarium Kit Fully integrated filtration and heater Designed with betta fish in mind Durable filter media Water diffuser decreases filter return to put less stress on bettas Bettas love lying against the intake Has a lid (bettas like to jump!) Pre-set heater Only 2.6 gallons Any nano tank needs to be very well planned, since a lot can go wrong in a small space