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Reproduction

Deepsea lizardfish encounter potential mates so rarely that they develop both male and female organs at the same time, allowing for self-fertilization if all else fails.

Appearance

Deepsea lizardfish are either dark brown or black, and have black eyes. They are covered in tough scales with black lining in the mouth and gill cavity. Their head is broad and flattened and contains a large wide mouth with many razor-sharp teeth. They even have some on their tongue!

Feeding Habits

From the darkness of the aphotic zone (where less than 1% of sunlight penetrates), deepsea lizardfish feed on shrimp and small squid, as well as dead fish that have drifted down from above. They hunt by resting on the bottom of the ocean, using the dark to conceal them, and wait with their mouth open for prey to swim by.

Bathysaurus ferox

References:

http://en.wikipedia.org/wiki/Deepsea_lizardfish

http://oddanimals.com/lizard-fish/

http://coralreef.noaa.gov/education/educators/resourcecd/background/resources/edge_abyss_bm.pdf

Classification:

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Aulopiformes

Family: Bathysauridae

Genus: Bathysaurus

Species: Bathysaurus ferox

Anatomy of a typical Actinopterygii (or ray-finned fish)

http://en.wikipedia.org/wiki/Actinopterygii

Chordata

Key features that appear at some stage during their development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Adaptations

When waiting for prey, lizardfish use their 2 strong pelvic fins to balance. They act as stabilizers against the underwater currents.

Their needle-like teeth are to make sure their scarce prey can't escape.

Dichotomous Key

  • Deepsea lizardfish
  • Lizard
  • Seahorse
  • Electric eel
  • Puffer fish
  • California lizardfish

Facts

  • Not very much is known about the deepsea lizardfish because they aren't very common and are only found at very deep depths.

  • All of the 60 species of lizardfish have teeth on their tongues.

  • Lizardfish larvae have transparent, scaleless, skin.

Carnivore, omnivore or herbivore?

The deepsea lizardfish is a carnivore because it only eats meat.

Competitor or decomposer?

The deepsea lizardfish is a competitor because it doesn't break down organisms, but it competes for food.

1st, 2nd or 3rd order consumer?

The lizardfish can be a 3rd order consumer because it:

Eats fish (2nd order consumer), who eat shrimp (1st order consumer), who eat phytoplankton (producer)

Predator or Prey?

The deepsea lizardfish is a predator because it hunts for its food and has no known predators.

Deepsea Lizardfish

The deepsea lizardfish is a cold-blooded fish found in tropical or subtropical waters (e.g. off the coast of South Africa) at a depth of around 600 - 3,500 metres.It is the deepest living of all the 60 species of lizardfish.

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