Species guide

How to catch Blue sea chub

Kyphosus cinerascens

Stylized 2D illustration of Blue sea chub
saltwatergame fishKyphosidae

The Blue sea chub is a saltwater fish known for its herbivorous diet and strong presence in reef habitats. It often forms groups over surf-swept outer reef flats and lagoon reefs. This species is recognized for its distinctive blue coloration and fusiform body shape.

Where they live

Lives in groups on hard, algae-covered bottoms of outer reef flats and lagoon reefs in the Atlantic, Pacific, and Indian Oceans, from the surface down to about 45 meters deep.

Typical size

Up to about 53 cm

What they eat

  • seaweeds
  • algal species like Cladophora, Jania, Dictyota, Padina
  • red algae such as Gracilaria, Laurencia, Polysiphonia
  • small associated invertebrates

Best baits

  • seaweed-based bait
  • vegetative marine material
  • small invertebrate bait

Best lures

  • soft plastic algae imitations
  • small natural-colored jigs

How to fish for them

  • bottom fishing near reefs
  • light tackle casting
  • bait fishing with plant-based baits

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How to catch Blue sea chub | Bobbr