Tag Archives: Damselfish

Spot the Scorpionfish

A Devil Scorpionfish in the waters off Hawaii
A Devil Scorpionfish in the waters off Hawaii

When I get to the end of a swim, I keep looking around because, as the water shallows, it’s possible to see a wide variety of fish and marine invertebrates.

Recently, I was about 10 feet from my exit point when I saw the Devil Scorpionfish in the photos. That’s right, there’s a fish in the top photo and it’s not the Bright-eye Damselfish on the left. The second photo gives a better view, where the fins stand out a bit and a flash of orange can just be seen on the left pectoral fin. A Devil Scorpionfish will flash these orange fins, probably as a warning to predators, since it has venomous spines.

Don’t feel bad if you can’t find the fish in the top photo. I wouldn’t have spotted it if it had been stationary, but in the shallow water, I noticed a small movement and quickly realized what I was looking at. I’ve seen a Devil Scorpionfish in this area before so this might be the territory of this same fish.

Hawaiian Gregory

An endemic Hawaiian Gregory in the waters off Hawaii

This endemic damselfish is mostly black or brown with a mottled distribution of light and dark scales, but it’s easily identified by its yellow eyes. It eats filamentous algae and is said to ‘farm’ the algae in its territory, which it defends vigorously against other algae-eaters after its crop.

Being watched

An assortment of fish on the reef in Hawaii

While this isn’t the greatest photo, I liked how the very small inhabitants of this rocky area were all looking at me at the same time. At the top is a juvenile wrasse, probably a Saddle Wrasse, though the Bird Wrasse is somewhat similar. The middle two are Bright-eye Damselfishes, and at the bottom is an Hawaiian Whitespotted Toby, the giant of the group at about 3 inches long.


An assortment of sergeant fish in the waters off Hawaii

Most of the fish in this photo, with five vertical black bars, are Indo-Pacific Sergeants. But there are a few fish where the bars fade away and these are endemic Hawaiian Sergeants. The two species sometimes interbreed, so some of these fish might be hybrid sergeants. Regardless, they’re a familiar sight in the water, usually swimming in large groups and feeding high in the water.

Bright fishes

This week’s Friendly Friday challenge theme is ‘Something Fishy.’ See more responses here.

This seemed like a good opportunity to post a gallery of some of the fish I see when I snorkel around here. Most are brightly colored or have distinctive markings.

Also posted in response to Becky’s April Squares challenge theme of ‘Bright.’ See more responses here.

Blackfin chromis

These small damselfishes are often seen, but less often noticed, if that makes sense. They gather around coral heads but are quick to disappear when approached. At some point I realized that I’d seen these fish often but didn’t actually know what they were. Now I do!