Bichir
Scientific Name: Polypteridae
Category: fish
Brief Description
A primitive ray-finned freshwater fish known for its elongated body, dorsal finlets, and ability to breathe air.
Characteristics
Elongated, eel-like body covered in thick ganoid scales. They possess a series of unique small dorsal finlets instead of a single dorsal fin. They have modified pectoral fins used for 'walking' on the substrate and a pair of primitive lungs.
Habitat
Slow-moving rivers, swamps, and floodplains in freshwater environments.
When to Find It
Can be observed year-round in tropical climates; often more active at night (nocturnal).
Conservation Status
Varies by species; most common species are Least Concern, but some local populations face habitat loss.
Ecological Role
They are specialized predators that help control populations of small fish and invertebrates. Their ability to survive in low-oxygen water makes them vital survivors in stagnant ecosystems.
Easily Confused With
Eels or Lungfish; distinguished by the presence of multiple separate dorsal finlets and hard, armor-like ganoid scales.
Observation Tips
In the wild, they are best found in shallow, weedy areas of African waterways. In captivity, ensure the tank has a secure lid as they are known to jump and can crawl out.
Interesting Facts
Bichirs are often called 'living fossils' because they have remained largely unchanged for millions of years. They can survive out of water for several hours as long as their skin remains moist.