Popular with aquarists, bichirs are a family of African fish [Polypteridae] able to breathe through lungs and to spend time out of water as do several other species of fish, notably lungfish and mudskippers. A study published in Nature describes observations of walking in captive-bred bichirs (Polypterus senegalus) that were raised to live wholly out of water, although in damp conditions.
Polypterus Senegalus #fish #aquarium #senegal
Feeding is relatively easy. Though it isn't interested in flake food, the Senegal Bichir will greedily devour frozen bloodworms, frozen or fresh shrimp and frozen beef heart. They will also eat sinking pellets like shrimp pellets and cichlid pellets as well as the occasional suitably-sized feeder fish. If housed with other fish that are aggressive feeders, special care should be taken to ensure that the relatively slow-moving is getting some of the food.
Polypterus senegalus tankmates - Monster Fish Keepers
But just how ancient fish made this shift to terrestrial life still remains largely a mystery. To learn more about what happened when the now-extinct fish tried living on land, scientists investigated the bichir (Polypterus senegalus), a modern African fish that has lungs for breathing air, and stubby fins it can use to pull itself along on land. The bichir possesses many traits similar to ones seen in , the researchers said.
Polypterus Senegalus Bichir Fish | Fishonlinerus
When Polypterus senegalus, an air breathing fish, was raised on land it showed environmentally induced plasticity. Fish raised on land walk with a more effective gait and have changes in their pectoral anatomy that resemble some key evolutionary changes in fossil stem tetrapods. This data presents evidence that environmentally induced developmental plasticity may have been present in the stem tetrapods and facilitated their successful transition onto land.Polypterus senegalus setup. Control fish were raised in the upper tanks, terrestrial fish were raised in the middle tanks in a few mm of water with misters to keep the air moist.Our experiment raised Polypterus senegalus for 8 months in a moist terrestrial environment. Fish ‘walked’ around on a wetted platform in a few millimeters of water but not suspended. To keep the air moist a misting system, much like you see at the supermarket keeping the lettuce fresh, continually sprayed water over the fish. After the fish had experienced this environment for a sufficient amount of time they were tested for their walking and swimming performance and their pectoral anatomy was imaged using microCT to quantify differences in the development of their bones.Do not underestimate the appetite of this fish. The aquarium shop owner told me that it is a 'fairly friendly' type, I believed as it looked pretty harmless. I still bought the smallest one (approx. length 8.5 cm), just to be on the safe side, since I'm adding it to my community tank. That night it joined my bunch of baby Koi, Swordtails & Neon Tetras; that had been getting along well for half a year. That night, this genocidal fish went on a killing spree. The next morning, all 13 (yes, THIRTEEN) of my Neon Tetras (each length: 2-2.5cm) were all gone!! The Polypterus Senegalus swelled like a bumpy sausage. Despite its small size, this little guy ate about 1 fish per hour!! My tank was equipped with loads of hiding space, but I guess 'you can swim, but you can't hide' form this species. From: