Fish Active during the day

Banded Butterflyfish

Chaetodon striatus

iNaturalist Wikipedia

A striking resident of the Western Atlantic, the Banded Butterflyfish is easily recognized by its bold 'zebra' stripes and monogamous lifestyle. Often seen in inseparable pairs, this reef beauty uses a clever 'false eye' to outwit predators.

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Quick Identification

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Size

12 to 15 cm (4.7 to 6 inches) in length; weighs approximately 100g (3.5 oz)

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Colors

Silver-white body with four vertical black bands; the first runs through the eye and the last is at the base of the tail. Fins may have yellow or dusky margins.

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Key Features

Two thick, primary vertical black bands across the body
Distinct black band running through the eye
Small black 'false eye' spot on the rear edge of the dorsal fin
Highly compressed, disk-like body shape

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 8 AM - 5 PM

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Season Year-round

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Diet Omnivorous gleaner that uses its pointed snout to pluck polychaete worms, coral polyps, sea anemones, and crustacean larvae from the reef.

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Habitat Shallow coral reefs, rocky seafloors, and occasionally seagrass beds.

Behavior

The Banded Butterflyfish is a diurnal species, meaning it is most active during the daylight hours when it can be seen gracefully navigating coral reefs and rocky outcrops. These fish are famous for their social structure; they are almost always found in pairs. These pairs are believed to be monogamous and remain together for years, working in tandem to keep a lookout for predators while foraging.

They possess a clever defense strategy involving a 'false eye'—a dark spot located near the tail. This confuses predators into thinking the fish’s tail is its head, often causing the predator to strike in the wrong direction while the butterflyfish darts away. At night, they seek shelter in deep reef crevices, where their colors may darken slightly to help them blend into the shadows and avoid nocturnal hunters.

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Camera Tips

Capturing the Banded Butterflyfish on camera requires an underwater setup, such as a GoPro or an AI-powered reef camera in a waterproof housing. Because these fish are creatures of habit, they often follow specific 'patrol' routes around the same coral heads every day. Position your camera at a height of about 12 to 24 inches above the seabed, ideally near a large brain coral or a cluster of tube worms, which are their favorite foraging spots.

Avoid placing the camera in direct shadows; instead, angle it so the sun is behind the lens to illuminate the silver scales and bold black bands. These fish are naturally curious and will often approach a stationary camera to inspect their reflection in the lens, providing excellent close-up opportunities. If you are using a trail camera with an underwater housing, ensure the motion sensor is set to high sensitivity, as their movements can be very fluid and quick.

For the best results, record during the middle of the day when light penetration is at its peak. If your camera settings allow, use a 'red filter' or adjust the white balance to a warmer setting to counteract the blue-green tint of the water. This will ensure that the stark contrast of the black bands against the white body is captured with high fidelity, making for a professional-grade wildlife shot.

Similar Species

Species that look similar or are commonly confused with Banded Butterflyfish.

Foureye Butterflyfish

Has thin chevron-shaped lines instead of thick vertical bars and a much larger 'eye' spot ringed in white near the tail.

Spotfin Butterflyfish

Lacks the bold vertical body bands and features a faint yellow hue with a small black spot on the outer edge of the dorsal fin.

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Frequently Asked Questions

Banded Butterflyfish are strictly diurnal, meaning they are active during the day. They are most easily spotted and photographed between 8 AM and 5 PM when the sun provides maximum visibility on the reef.

To attract Banded Butterflyfish, place your camera near healthy coral reefs, specifically near tube worm colonies or sea anemones. While you should never feed reef fish, positioning your camera in a 'cleaning station' where smaller fish pick parasites off larger ones is a great way to see them.

They are generalist feeders that eat small invertebrates. Their diet primarily consists of polychaete worms, coral polyps, and various types of eggs or larvae they find in reef crevices.

Yes, they are very common in shallow coastal waters, often found at depths as shallow as 3 to 5 meters, making them a favorite for snorkelers and backyard dock cameras.

The Banded Butterflyfish has thick, vertical black bars, whereas the Foureye Butterflyfish has thin, chevron-shaped lines and a much larger, more prominent black spot near its tail that is ringed in white.

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