Mosquitofish genital shape linked to presence of predators

(Phys.org) —When predators lurk nearby, male Bahamas mosquitofish (Gambusia hubbsi) change mating strategies, rejecting elaborate courting rituals for more frequent and sometimes forceful encounters with females.

Ecologist overthrows generally accepted principles in ecology

(Phys.org) —Contemporary ecological theory assumes that differently sized individuals in a population are equally efficient in their use of food resources. Still this is only true in a very exceptional case. It is much ...

Robots strike fear in the hearts of fish

(Phys.org) —The latest in a series of experiments testing the ability of robots to influence live animals shows that bio-inspired robots can not only elicit fear in zebrafish, but that this reaction can be modulated by ...

Aquatic playground can turn water tanks into fish schools

Raising fish in tanks that contain hiding places and other obstacles can make the fish both smarter and improve their chances of survival when they are released into the wild, according to an international team of researchers.

Flipping fish adapt to land living (w/ Video)

Researchers have found that the amphibious mangrove rivulus performs higher force jumps on land than some other fishes that end up on land. This new study shows that unlike the largemouth bass, which makes very few excursions ...

It smells fishy: Copper prevents fish from avoiding danger

Fish fail to detect danger in copper-polluted water. A new study, to be presented at the meeting of the Society for Experimental Biology on the 5th of July, shows that fish cannot smell a danger odor signal emitted by other ...

Jumping snails leap over global warming

Snails in the Great Barrier Reef literally jump for their life to avoid predators. But will they be able to maintain these life-saving jumps, with rising sea temperatures? A new study, to be presented at the Society for Experimental ...

Researchers developing techniques for tuna aquaculture

Swimming around and around in a 20,000 gallon tank at the University of Rhode Island's Bay Campus are several large yellowfin tuna captured last fall about 100 miles off the Rhode Island coast. The fish are part of the first ...

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