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The archerfish uses motor adaptation in shooting to correct for changing physical conditions.
Elife
June 2024
Department of Biomedical Engineering, Ben-Gurion University of the Negev, Be'er Sheva, Israel.
Article Synopsis
- - The archerfish is known for its remarkable hunting technique, shooting a jet of water to knock insects off overhead surfaces, effectively overcoming challenges like light refraction.
- - A study tested the fish's ability to adapt to environmental changes, specifically by measuring how it adjusted its shots when airflows disrupted its aim.
- - Results showed that the archerfish could effectively adapt to these perturbations, as it reduced aiming errors over time and even adjusted its shots based on the direction of airflow, demonstrating its capacity for motor adaptation.
Phylogenetics of Archerfishes (Toxotidae) and Evolution of the Toxotid Shooting Apparatus.
Integr Org Biol
March 2022
Department of Ecology and Evolutionary Biology and Biodiversity Institute, University of Kansas, Lawrence, KS 66045, USA.
Synopsis: Archerfishes (Toxotidae) are variously found in the fresh- and brackish-water environments of Asia Pacific and are well known for their ability to shoot water at terrestrial prey. These shots of water are intended to strike their prey and cause it to fall into the water for capture and consumption. While this behavior is well known, there are competing hypotheses (blowpipe vs.
View Article and Find Full Text PDFShort-range hunters: exploring the function and constraints of water shooting in dwarf gouramis.
J Exp Biol
December 2021
Centre for Biological Diversity, School of Biology, University of St Andrews, St Andrews KY16 9TH, UK.
Ballistic predation is a rare foraging adaptation: in fishes, most attention has focused on a single genus, the archerfish, known to manipulate water to shoot down prey above the water surface. However, several gourami species also exhibit apparently similar 'shooting' behaviour, spitting water up to 5 cm above the surface. In a series of experiments, we explored the shooting behaviour and aspects of its significance as a foraging ability in the dwarf gourami (Trichogaster lalius).
View Article and Find Full Text PDFArcherfish coordinate fin maneuvers with their shots.
J Exp Biol
April 2021
Department of Animal Physiology, University of Bayreuth, 95440 Bayreuth, Germany.
Archerfish down a variety of aerial prey from a range of distances using water jets that they adjust to the size and distance of their prey. We describe here that characteristic rapid fin maneuvers, most notably of the pectoral and pelvic fins, are precisely coordinated with the release of the jet. We discovered these maneuvers in two fish, the jets of which had been characterized in detail, that had been trained to shoot from fixed positions at targets at different heights and that remained stable during their shots.
View Article and Find Full Text PDFRapid depth perception in hunting archerfish. I. The predictive C-starts use an independent estimate of target height.
J Exp Biol
July 2018
Department of Animal Physiology, University of Bayreuth, Bayreuth 95440, Germany
Archerfish dislodge aerial prey with water jets and use their predictive C-starts to secure it. Their C-starts turn the fish to the later point of impact and set the speed so that the fish arrive just in time. The starts are adjusted on the basis of information on speed, direction, timing and horizontal start position of prey movement - sampled during less than 100 ms after prey starts falling.
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