Fish Daytime

Slippery Dick

Halichoeres bivittatus

iNaturalist Wikipedia

The Slippery Dick is the reef's most energetic explorer, known for its bold personality and stunning color transformations. Whether darting through seagrass or following divers, this agile wrasse is a master of the shallow Atlantic waters.

0 Sightings

0 Habitats

Quick Identification

straighten

Size

Typically 7 to 10 inches (18 to 25 cm), though large males can reach up to 14 inches (35 cm).

palette

Colors

Juveniles and females (initial phase) are white with two distinct dark horizontal stripes. Mature males (terminal phase) transform into a vibrant green or blue-green with pink, purple, and yellow highlights.

visibility

Key Features

Two dark horizontal stripes running the length of the body
Small dark spot at the base of the dorsal fin and tail
Elongated, cigar-shaped body
Protractile mouth with small canine teeth

When You’ll See Them

schedule

Activity pattern Active during the day

brightness_5

Peak hours 9 AM - 4 PM

calendar_month

Season Year-round

restaurant

Diet Carnivorous scavenger that feeds on small crustaceans, mollusks, sea urchins, and marine worms.

park

Habitat Shallow tropical waters, including coral reefs, rocky jetties, and seagrass beds.

Behavior

The Slippery Dick is a highly active and inquisitive member of the wrasse family. Known for its constant movement, it is frequently seen darting between coral heads and over sandy patches in search of food. They are remarkably bold and are often the first fish to arrive when the seabed is disturbed, eagerly scavenging for any exposed invertebrates. Their name comes from their incredible agility and a thick mucus coating that makes them nearly impossible to grasp by hand.

Socially, they exhibit a fascinating life cycle called protogynous hermaphroditism, where individuals can change sex from female to male. They are primarily solitary hunters but will congregate around food sources. At night, they exhibit a unique survival strategy: they dive head-first into the sand and bury themselves completely to sleep, protecting themselves from nocturnal predators.

photo_camera EverydayEarth exclusive

Camera Tips

Capturing the Slippery Dick on an AI-powered camera requires an underwater setup, such as a waterproof housing for a trail cam or a dedicated reef-monitoring camera. For those with coastal 'backyards' like docks or seawalls, the best results come from placing the camera 2 to 5 feet below the low-tide line. Angle the lens slightly downward toward a sandy patch adjacent to a rocky structure or reef; this 'edge' habitat is where the fish spend most of their time foraging.

Because they are highly visual and curious, you don't always need complex lures, but 'chumming' the area can create an incredible action sequence for your AI trigger. A perforated PVC pipe filled with crushed shrimp or sea urchins will act as a scent magnet. Position the bait station about 18 inches in front of the lens. The Slippery Dick's rapid, darting swimming style can sometimes blur images, so use a high shutter speed or a camera setting with a high frame rate (60fps) if your device allows.

Lighting is the most critical factor for showcasing their iridescent colors. Mid-day sun (between 10 AM and 2 PM) provides the best natural light penetration in shallow water, turning their subtle pinks and greens into vibrant highlights. If your camera is under a dock, consider a small, wide-angle LED submerged light to prevent the 'silhouette effect.' Be sure to clean the lens housing every few days, as algae and barnacles grow quickly in the warm, shallow waters where these fish thrive.

In terms of AI settings, increase the sensitivity for 'motion' triggers. These fish are relatively small and fast, so a low-sensitivity setting might miss the initial approach. If your camera software allows for 'burst mode,' set it to take 3-5 photos per trigger to ensure at least one shot captures the fish in profile, which is essential for identifying the characteristic horizontal stripes of this species.

Similar Species

Species that look similar or are commonly confused with Slippery Dick.

Clown Wrasse

The Clown Wrasse lacks the two distinct full-length horizontal stripes and often features a dark 'ear' spot and more complex facial markings.

Yellowhead Wrasse

Adult Yellowhead Wrasses have a bright yellow head and a dark vertical bar behind the gill, unlike the horizontal stripes of the Slippery Dick.

Browse all Fish arrow_forward

Frequently Asked Questions

Slippery Dicks are strictly diurnal, meaning they are active during daylight hours. They are most visible from mid-morning to late afternoon when the sun is high. At night, they disappear completely by burying themselves in the sand to sleep.

If you have a dock or waterfront property in a tropical climate, you can attract them by providing structure like submerged rocks or reef balls. They are also attracted to disturbed sediment; gently stirring up the sand or providing a scent-based lure like crushed shellfish will bring them into camera range quickly.

They are opportunistic carnivores. Their diet consists of benthic invertebrates, including small crabs, snails, brittle stars, and worms. They use their sharp front teeth to pick prey off rocks or crush thin shells.

Yes, they are one of the most common fish seen around coastal suburban infrastructure in Florida and the Caribbean, including canals, seawalls, and public piers.

The easiest way is to look at the stripes. A Slippery Dick has two dark horizontal stripes running the full length of its body, whereas the Clown Wrasse typically features a series of spots or vertical bars and a much more colorful, 'patchy' appearance on its head.

Record Slippery Dick at your habitat

Connect a camera to start building your own species record — AI identifies every visitor automatically.

Join free Identify a photo