Smithsonian scientists discover 7 new species of fish

Things are not always what they seem when it comes to fish — something scientists at the Smithsonian Institution and the Ocean Science Foundation are finding out. Using modern genetic analysis, combined with traditional examination of morphology,…

Wild rainbow trout critical to health of steelhead populations

CORVALLIS, Ore. — Genetic research is showing that healthy steelhead runs in Pacific Northwest streams can depend heavily on the productivity of their stay-at-home counterparts, rainbow trout.
Steelhead and rainbow trout look different, grow d…

Fishy consequences of transplanting trout, salmon, whitefishes

Montreal, January 26, 2011 — Not all trout are created equal. Those swimming up the streams of British Columbia might resemble their cousins from Quebec, yet their genetic makeup is regionally affected and has an impact on how they reproduce, …

Mercury in Bay Area fish a legacy of California mining

ANN ARBOR, Mich.—Mercury contamination, a worldwide environmental problem, has been called “public enemy No. 1” in California’s San Francisco Bay.
Mercury mining and gold recovery in the mid-1800s to late 1900s, combined with present day oil ref…

Discus fish parent young like mammalian mothers

Few fish are famed for their parenting skills. Most species leave their freshly hatched fry to fend for themselves, but not discus fish. Jonathan Buckley from the University of Plymouth, UK, explains that discus fish young feed on the mucus that the…

Large-scale fish farm production offsets environmental gains

VICTORIA — Industrial-scale aquaculture production magnifies environmental degradation, according to the first global assessment of the effects of marine finfish aquaculture (e.g. salmon, cod, turbot and grouper) released today. This is true even …

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