Fishes that eat grubs
Most of the fishes are grubs’ eaters; however it is absolutely essential to use very-small sized fishes.
It is important to use ovoviviparous surface fishes (such as poeciliidae, million fishes (guppy), gambusia, platy, xipho and so on which may be purchase from all tropical fish retailers) in order to avoid electrical oxygenation; mosquitoes are looking for stagnant water and the swirl of water disrupts the trap’s appeal.
Fishes from the Labyrinthides family such as gourami, paradise fish, colisa, Siamese fighting fish and so on may also be used because they got a lung known as “labyrinth” which allows them to get some fresh air by regularly changing the air bubble which is stocked inside.
The guppy (poecilia reticulata), classified as a domestic animal, is a ready-reproduction fish. It is the most appropriated fish to tropical and subtropical regions. Different sizes of guppy are available in pet shops as well as in many natural regions through the world.
The smaller is the fish; the best will be the balance and self-sufficiency of the system.
Unlike the guppy, the gambusia (Gambusia Affinis) which is part of the same family; is perfectly appropriated to temperate regions because it may bear water with a temperature equal to 0°C. As the guppy, the gambusia is ovoviviparous. Females give birth to alevins without any yolk sac and ready to eat eggs and grubs as soon as they start their first phase of development.
Gambusia as guppy is “a natural predator of mosquitoes’ grubs” which has been introduced in the past in the natural environment in many regions in order to fight against proliferation of mosquitoes. These fishes are able to daily ingest the equivalent of their weight.
The introduction of grubs’ predator-fishes in some regions allows partly solving the problems of grubs’ nests without using chemical and pollutant substances which may only have shift it.
In some regions such as New-Caledonia, Florida, West Indies, Corsica, Guyana and so on, grubs’ predator-fishes are a biological agent that is free and inexhaustible thanks to their availability and ability to reproduce easily.