Spotted ratfish: Facts, Records, and How to Catch Them | FishyAF Species #
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Spotted ratfish
hydrolagus colliei
Glowing eyes, zero runs, and a spine that keeps you honest. - Lucas Reed
Quick Facts
Average Size
2.1–2.7 inches 0.004–0.010 lbs
World Record

Pending

Habitat
Cold Coastal Bays And Shelves
Best Techniques
Bottom Fishing With Light Tackle
Best Baits
Squid Strips And Shrimp
Challenge Score
Explorer: 38
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Learn Real Facts — Choose Your Vibe

Spotted Ratfish (Hydrolagus colliei): A Bold, Memorable Hook LineIntroductionYou don't forget your first spotted ratfish. Big glowing eyes, a whip tail, and a venomous spine announce that this weirdo is not your average bottom biter. It's a chimaera, a cartilaginous cousin of sharks and rays that quietly haunts cold Pacific coastlines. For night-owl anglers on the West Coast and Alaska, the spotted ratfish is the oddball that shows up when the boat lights throw a green glow and the squid strips hit sand.What Makes the Spotted ratfish Unique?Start with the hardware. The spotted ratfish carries a mildly venomous spine just ahead of its first dorsal fin, a painful surprise if you get casual with the release. Males grow a forehead "tentacle," the tentaculum, used to grip females during mating. Instead of teeth, it grinds food with self-renewing tooth plates that look like ceramic tiles. Those neon-green eyes? They shine thanks to a reflective layer that supercharges low-light vision. Add a long, ratlike tail and silvery body peppered with white spots, and the spotted ratfish looks custom-built in a science lab.Habitat & Global RangeIf you're digging into Spotted ratfish habitat, think cold, clean water along the Northeast Pacific. The species ranges from Alaska down the West Coast to Baja California, edging inshore at night and slinking deeper by day. It favors soft bottom around bays, channels, and the continental shelf, often near kelp edges or scattered structure. Depth can be anything from easy-to-reach pier water to several hundred feet offshore, which is why most encounters come from bottom fishing with bait after dark.Behavior & TemperamentThe spotted ratfish is a calm, methodical cruiser. It flaps broad pectoral fins like wings, gliding just off the bottom and using electroreception to detect buried prey. No panic charges or blistering runs here; strikes are more like steady pickups or polite taps. They gather loosely at times but rarely school tight. Nights are prime feeding windows, especially in protected bays with minimal current. Handle with care: that dorsal spine can tag hands, nets, or deck mats if you rush the unhooking.Ecological ImportanceAs a mid-level predator, the spotted ratfish helps regulate benthic invertebrates like crabs, clams, and shrimp. Grinding plates let it crush shells other fish ignore, recycling nutrients and influencing which critters dominate the seafloor. Its eggs, laid as long, leathery capsules, tuck into the bottom where they weather months before hatching. Predators hit them, too, so the species threads an important link between small invertebrates, egg predators, and larger fish that occasionally snack on adults.Conservation & Environmental PressuresHere's the good news: the spotted ratfish is listed as Least Concern. It isn't a headline commercial target, and intense sport pressure is rare. That said, it's no invincible zombie. Habitat degradation in estuaries, warming events, hypoxia, and seafloor disturbance can squeeze local pockets. Because chimaeras mature slowly, chronic bycatch or environmental shifts can stack up over time. Most anglers release them, which helps, but smart handling matters. Keeping them off hot decks and avoiding that spine saves both your fingers and the fish.The FishyAF TakeIf your bucket list includes strange, the spotted ratfish belongs near the top. It's the after-hours curveball that turns a quiet bay soak into story time. For Spotted ratfish facts, remember three things: fish slow and low, aim for the dark shift, and bring pliers. You're not in this for a drag-peeling brawl; you're here for the glow-eyed stare, the prehistoric vibe, and the surprise of catching something older than almost any lineage you usually target. The spotted ratfish may never headline tournaments, but it nails the FishyAF brief: weird, willing, and unforgettable.

Spotted ratfish Size Chart & Trophy Benchmarks

Top Fisheries for Spotted ratfish

Best places to catch Spotted ratfish and how far they are from you.

From iconic trophy waters to bucket-list destinations, these are some of the best places on the planet to target Spotted ratfish.

Puget Sound

Washington
--
Miles

Barkley Sound

British Columbia
--
Miles

Monterey Bay

California
--
Miles

Resurrection Bay

Alaska
--
Miles

San Juan Islands

Washington
--
Miles
Seasonality Chart

Best months to catch Spotted ratfish: Apr

great
great
great
peak 🔥
good
fair
poor 🦨
poor 🦨
fair
good
great
great
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Spotted ratfish Intelligence

Fishing Window
Poor
Skunk Risk
Season Score 64/100
Trend Improving
Peak Season In 9 Months
Difficulty Meter
38
Explorer
Beginner Friendly
Feeding Triggers
Time of Day Moderate
Temperature Moderate
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Weather High
Most Important: Current
Behavior
Spotted ratfish
Behavior Profile Radar
Strike
Spotted ratfish
Strike Profile Radar
Positioning
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Positioning Radar
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Spotted ratfish
Fight Radar
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Where to Find Spotted ratfish
Preferred Structure
Wood
Rock
Weeds
Undercuts
Depth Breaks
Water Column
Surface
Mid
Bottom
Cover vs Roam
Cover Roam

Gear Loadout for Spotted ratfish

A reliable starting setup for targeting Spotted ratfish, based on typical size, habitat, and presentation style.

Core Setup

  • ROD 7' medium spinning or light conventional rod
  • REEL 3000–4000 size spinning or low-profile conventional with smooth drag
  • LINE 15–20 lb braid
  • LEADER 15–25 lb mono or fluoro 18–24 inches

Lures & Baits

  • squid strips
  • shrimp pieces
  • small glow jigs tipped with bait

Tactical Notes

  • anchor quietly
  • fish after dark on soft bottom
  • short leaders
  • gentle sweep set
  • handle spine with pliers