Zebrafish…

• Are able to see color in the 340 nm (UV) to 640 nm (red) wavelength range.
• Can hear: they have an inner ear. There is a connection between the swim bladder and the inner ear. The swim bladder responds to pressure changes, which are transmitted to the inner ear. Zebrafish have good hearing in the low-frequency range: from 100–4000 Hz, with an optimum around 800 Hz.
• Have a lateral line system that allows them to detect differences in pressure and vibrations caused by movements in the water.
• Have a good sense of smell; they use pheromonesPheromones Scented substances that have a signaling function for the animal species that secretes them. to communicate about reproduction and threats. Skin lesions, for example, cause the release of ‘alarm pheromones’, which trigger a potent (flight)response in zebrafish.