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Accessories

Mesh cover

accessory

Used for: Tank maintenance

Description

A mesh cover closes the top of a tank against the one exit fish take on their own. Fish do jump out, and research groups record it when it happens. A 2026 study of killifish growth and lifespan excluded fish that did not die a natural death, and the example it gives is a fish that jumped out of a tank during routine maintenance. A 2025 guppy study reports its sample size with the note that one jumped out of the tank during acclimatisation. Neither paper is about covers; they are here because they show the event is ordinary enough to turn up in a methods section. The covers themselves are documented by the people who sell them. The anti-jumping net cover in our search is a kit: adhesive-backed magnetic strip, grooved magnetic strip, four corner buckles and a net measuring 4.92 by 3.28 feet, which can be cut and installed according to different fish tanks, and the seller says it suits curved, bow front and diamond shaped tanks too. The seller's case for mesh over glass is that the net is so soft that it will not injure the fish when the fish jumps, and that the small aperture net can prevent fish of various sizes from jumping out of the tank while providing fresh air. Those are the seller's claims, and no source here tests them. A rigid alternative from the same search is a plastic grid panel. That listing sells four boards of 11.6 by 11.6 inches with 0.35 inch holes, which can be freely pieced together through concave convex buckles and cut with scissors, held by clips on glass walls under 0.8 inch thick, and it offers the same boards as an aquarium isolation board. No source gives a mesh size for a given fish or a rule for how much of the top must be covered, so this page gives neither.

Sources

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