The squirrelfish, Holocentrus adscensionis, are commonly found along the southeastern
coast of the United States to northern South America and Brazil. They also inhabit
shallow coral reefs in the Caribbean. I spotted a squirrelfish at Looe Key hiding
under Acropora palmata. Squirrelfish
are most commonly spotted at depths of 30-70m, and are rarely seen in shallow
waters. Squirrelfish commonly stay in deeper water
where it’s darker because they are nocturnal fish. They remain in holes
or caves in the reef structure during the day.
Squirrelfish
are not listed by IUCN because there are not any serious threats to their population.
Humans rarely eat squirrelfish because its body size has such little value. The
biggest anthropogenic threat on squirrelfish is the aquarium industry, because
these fish has bright colored bodies.
This species is capable of
producing sounds with its swim bladder for intra-specific communication. It emits a grunting sound to fend off threatening fish,
and short burst of a distinctive sound to signal an alarm to other squirrelfish.
They also are known to have sharp spines that can
secrete a poison. In conclusion the beautiful brightly colored squirrelfish is
one of my favorite reef fish and I’m so glad I got to see it on my last snorkeling
trip of the week.
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