The red cornetfish (Fistularia petimba), also known as the rough flutemouth, is a cornetfish of the family Fistulariidae, found in subtropical and tropical oceans worldwide, at depths between 10 m (33 ft) and 200 metres (660 ft). They are up to 2 m (6.6 ft) in length but rarely exceed 1 m (3.3 ft).
In Japan, they are called akayagara (Japanese: 赤矢柄; アカヤガラ; "red arrow shaft"), or sometimes teppō (鉄砲 or 鉄炮; てっぽう; "rifle (fish)").
Fistularia petimba is widespread in warmer parts of the Atlantic Ocean and Indo-Pacific, including the waters of Australia and Hawaii. The species mostly lives in subtropical regions. In tropical areas, it tends to occur deeper or in places with cold upwellings.
It occurs between 10–200 m (33–656 ft) depth, but most often at depths of 18–57 m (59–187 ft) over soft substrates. It is an oviparous species which lays large pelagic eggs which hatch into larvae of 6–7 millimetres (0.24–0.28 in), the juveniles move into estuarine habitats. This species is a crepuscular, stealthy predator which stalks its prey by moving slowly towards shoals of small fish, using its slender form to hide, and when it is close enough to its prey it darts forward and sucks it into its mouth.
- Carpenter, K.E.; Robertson, R. & Munroe, T. (2017) [errata version of 2015 assessment]. "Fistularia petimba". IUCN Red List of Threatened Species. 2015: e.T16781113A115364459. doi:10.2305/IUCN.UK.2015-4.RLTS.T16781113A16782243.en.
- Froese, Rainer and Pauly, Daniel, eds. (2018). "Fistularia petimba" in FishBase. February 2018 version.
- Dianne J. Bray; Vanessa J. Thompson. "Fistularia petimba". Fishes of Australia. Museums Victoria. Retrieved 11 Jun 2018.
- Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) ISBN 0-00-216987-8