Lined Combtooth Blenny
Ecsenius lineatus
A master of the 'perch and watch' lifestyle, the Lined Combtooth Blenny brings personality to the reef with its striking stripes and expressive, bulbous eyes. This small but bold fish is a favorite for macro photographers and reef observers alike.
Quick Identification
Size
6-10 cm (2.4-4 inches) in length; weight is negligible, typically under 20 grams.
Colors
Pale yellowish-tan to greenish-brown base color with two to three prominent dark brown or black horizontal stripes running the length of the body; eyes often feature bright orange or yellow rings.
Key Features
- Blunt, rounded head with high-set eyes
- Two to three dark horizontal stripes extending to the tail
- Fringed cirri (hair-like structures) above the eyes
- Commonly seen 'perching' on rocks using pectoral fins
When You’ll See Them
Geographic range
Where Does the Lined Combtooth Blenny Live?
Where Does the Lined Combtooth Blenny Live? This tropical marine species is native to the Indo-West Pacific, spanning a massive area from the shores of East Africa and the Maldives to the coral-rich waters of Japan, the Philippines, and northern Australia. It is most commonly found in the shallow, sun-drenched reefs of the Coral Triangle, where it occupies depths between 1 and 20 metres. While widely distributed across the Indian Ocean, it remains a resident specialist of stable reef environments and has no known introduced populations.
Basemap © OpenStreetMap contributors
Behavior
The Lined Combtooth Blenny is a charismatic and highly territorial reef dweller. Unlike many fish that swim constantly, this species spends most of its day perching atop coral heads or rocky outcrops, using its pectoral fins like small tripod legs to survey its surroundings. They are incredibly observant and will dart back into a small hole or crevice at the first sign of a predator, only to poke their heads back out seconds later to investigate.
Socially, they are solitary and can be quite aggressive toward other blennies or fish that compete for the same food source. Their day is largely spent 'combing' the substrate; they use their specialized comb-like teeth to scrape films of algae and detritus off the reef. While they generally ignore humans, they are bold enough to remain on their perches if approached slowly, making them a favorite for underwater observers and aquarium enthusiasts alike.
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Camera Tips
Capturing the Lined Combtooth Blenny requires a specialized approach because they are strictly aquatic. For those with 'backyard' access to a reef or a high-end marine aquarium, the key is to identify their 'sentinel station.' These fish are creatures of habit and will return to the same rock or coral nub dozens of times a day. Position your camera housing or waterproof AI-camera at eye level with a known perching spot, ideally at a distance of 6 to 10 inches to allow the macro lens to capture their intricate facial features.
Lighting is critical for bringing out the contrast in their eponymous stripes. In a natural reef setting, try to film during the middle of the day when the sun is directly overhead to penetrate the water column. If you are using an artificial light source, use a diffused video light rather than a flash. Harsh strobes often cause blennies to retreat into their holes, whereas a steady, soft light allows them to become accustomed to the equipment, leading to more natural foraging footage.
Set your camera to a high frame rate, such as 60 or 120 fps. While the Lined Combtooth Blenny looks stationary, its movements are lightning-fast 'darts.' A standard 30 fps recording will often result in a motion-blurred streak when the fish decides to move. Use AI-subject tracking set to 'small animals' if available, as the distinct horizontal lines of this species provide excellent contrast for modern autofocus algorithms to lock onto.
Similar Species
Species that look similar or are commonly confused with Lined Combtooth Blenny.
Tailspot Blenny
Smaller with a distinct dark spot at the base of the tail and a colorful band under the eye instead of full-body stripes.
Midas Blenny
Usually solid golden-yellow and swims more frequently in the water column rather than perching on rocks.
Blackline Blenny
Has a single thick black stripe and a more elongated, eel-like swimming motion compared to the perching Lined Blenny.
Frequently Asked Questions
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