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Weedy Scorpionfish, Rhinopias frondosa | ©Albert Kang  (Batangas, Philippines)

Commonly known as Weedy Scorpionfish, Popeyed Scorpionfish or the Purple Tassled Rhino Scorpionfish, Rhinopias frondosa (Scorpaenidae) is a spectacular fish, very rare, but once found, can be easily located again as they tend to stay at the same place unless disturbed.

The colors will vary but they’re generally in red, purple, orangish hues. The specimen shown is purple variation.

Reef Stonefish - Synanceia verrucosa - The World’s most venomous fish

Amazingly this is a fish, more precisely a Reef Stonefish of the species Synanceia verrucosa (Scorpaeniformes - Synanceiidae), and yes, it is venomous and the deadliest fish in the sea. The dorsal fin has two grooves serving as syringes of venom; their stings are excruciatingly painful and can be fatal to humans. A serum exists which is effective if applied immediately after the infliction. 

Reef Stonefish only uses its venom as a defense mechanism. Most commonly, it is encountered by humans when the Reef Stonefish is stepped on accidentally or is mistaken as a rock and picked up by humans.

The Reef Stonefish is found in the Indo Pacific Ocean, on sandy or rubble areas of reef flats and shallow lagoons and in small pools during low tide well camouflaged among the substrate and sometimes even covered with algae. 

References: [1] - [2]

Photo credit: ©Richard Ling | Locality: Steve’s Bommie, Ribbon Reef #3, Great Barrier Reef, Australia (2006)

Ocellated Lionfish (Dendrochirus biocellatus)

Also known as the Twospot Turkeyfish, the ocellated lionfish is a species of scorpionfish (Scorpanidae) which is widespread throughout the tropical waters of the Indo-West Pacific. Like other scorpionfish occelated lionfish are posses venomous spines which can cause extreme pain. Ocellated lionfish are predators and will feed on a variety of crustaceans and sometimes even small fish. 

Classification

Animalia-Chordata-Actinopterygii-Scorpaeniformes-Scorpaenidae-Dendrochirus-D. biocellatus

Image: Maupin Delphine

Cheekspot Scorpionfish / イソカサゴ

Cheekspot Scorpionfish|イソカサゴ

Scorpaenodes evides

Cheekspot Scorpionfish
It looks a little puffed up.

イソカサゴ
やや膨れているっぽい。

Classification
Animalia Chordata Actinopterygii Scorpaeniformes Scorpaenidae
動物界 脊索動物門 条鰭綱 カサゴ目 フサカサゴ科

Photo taken at Sumida Aquarium, Tokyo, Japan

Taenianotus triacanthus | ©Kévin Bourdon   (Cap Lahoussaye, Ile de la Reunion)

A pinky Leaf scorpionfish or PaperfishTaenianotus triacanthus (Scorpaenidae). It is a marine fish with prickly papillae instead of scales, soft dorsal fin attached to the caudal fin, and variable coloration, from nearly all yellow to red, brown or nearly black and variously mottled with darker pigment.

This species occurs in the Indo-Pacific region: East Africa to the Galapagos Islands, north to Ryukyu and Hawaiian islands, south to Australia and the Tuamoto Islands.

[Source]

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Cockatoo Waspfish (Ablabys taenianotus)

Also known as the Leaf fish, Dwarf Lionfish, Shortfin Turkeyfish or Rouge Fish, the Cockatoo Waspfish is a species of scorpion fish endemic to the Western Pacific Ocean. Cockatoo Waspfish are often found resting on sandy bottoms or in fields of sea grass. They are nocturnal and emerge at night to feed by camouflaging themselves as a dead piece of wood or vegetation and snatching any small animals that pass by. Like the insect they are named after, cockatoo waspfish are indeed venomous and are covered in barbs which will produce a painful (but non lethal) sting.

Phylogeny

Animalia-Chordata-Actinopterygii-Scorpaeniformes-Scorpaenidae-Ablabys-taenianotus

Image Source(s)

Blue rockfish / ブルーロックフィッシュ

Sebastes mystinus

Blue rockfish
It’s found from Alaska to Baja California.

ブルーロックフィッシュ
アラスカからカリフォルニア半島にかけて生息。


Animalia Chordata Actinopterygii Scorpaeniformes Scorpaenidae
動物界 脊索動物門 条鰭綱 カサゴ目 フサカサゴ科

The picture was taken at Tokyo Sea Life Park, Japan.

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"Demon Stinger" (Inimicus didactylus)

Also known as the “Devil’s Stinger”or Bearded Ghoul Inimicus didactylus is a venomous species of stonefish (Synaceiidae) that is distributed throughout the Indo-West Pacific. Bearded Ghouls typically inhabit sandy or silty substrates of lagoons and seaward reefs and are often seen buried into the sand. They are predators and will feed on a variety of small fish and crustaceans. Their venom can be deadly to humans and efficient camouflage makes them very difficult to spot. 

Classification

Animalia-Chordata-Actinopterygii-Scorpaeniformes-Synaceiidae-Inimicus-I. didactylus

Images: Bjoertvedt and Silke Baron

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Canary Rockfish

Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Scorpaeniformes
Family: Sebastidae
Genus: Sebastes
Species: pinniger

Characteristics: 

  • Long life span
  • Slow to reach full maturity 
  • Physoclistic swim bladders 
  • Moderate rate of growth 

Habitat:

  • Southern Alaska, Baja California, Mexico 
  • Inhabit waters 160 to 820 feet deep 

Diet:

  • Plankton 

Locomotion:

  • Slow moving 

Oriental flying gurnard | ©Marta Rubio Texeira     (Negros Oriental, Philippines)

The Oriental flying gurnard, Dactyloptena orientalis (Scorpaeniformes - Dactylopteridae), is a marine fish, up to 40 centimeters (16 in) in length.

This fish has huge, round pectoral fins having many dark markings and a bright blue edge. The pectoral fins are normally held against the body, but when threatened the fins are expanded in to scare predators which include sea breams and mackerel. The flying gurnard uses its pelvic fins to walk along the bottom of the ocean.

The species inhabits the Indo-Pacific Oceans at depths up to 100 metres (330 ft).

Rhinopias frondosa | ©Jim Anderson

It’s hard to believe, but yes, it is a fish, a rather strange, actually a Weedy Scorpionfish, Rhinopias frondosa (Scorpaenidae), found in the Indo-West Pacific (South Africa, Japan, Caroline Islands, Australia).

This fish is covered with appendages on algae patches, but plain when surrounded by sponges. Its body is highly compressed, and has highly variation in color and in appendages in relation to habitat.

[Source]

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