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Home > Marine Fish > Miscellaneous Fish > Two-Fin Flashlight Fish EXPERT ONLY
Two-Fin Flashlight Fish EXPERT ONLY (Anomalops katoptron)
Two-Fin Flashlight Fish EXPERT ONLY
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Please Note: Due to variations within species, your item may not look identical to the image provided. Approximate size range may also vary between individual specimen.
Two-Fin Flashlight Fish EXPERT ONLY (Anomalops katoptron)
Additional locales and sizes may be available!
Additional locales and sizes may be available!
 Arrive Alive
Rewards Program

Quick Stats

Care Level Expert Only
Temperament Peaceful
Color Form Black
Diet Carnivore
Reef Compatible With Caution
Water Conditions sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4
Max. Size 9"
Family Anomalopidae
Minimum Tank Size 125 gallons
Compatibility View Chart
What do these Quick Stats mean? Click here for more information
Care Level Expert Only
Temperament Peaceful
Color Form Black
Diet Carnivore
Reef Compatible With Caution
Water Conditions sg 1.020-1.025, 72-78° F, dKH 8-12, pH 8.1-8.4
Max. Size 9"
Family Anomalopidae
Minimum Tank Size 125 gallons
Compatibility View Chart
What do these Quick Stats mean? Click here for more information

Overview

The Two-Fin Flashlight Fish is also known as the Splitfin Flashlight Fish or Lantern Fish and is recognized by having a black body with a blue hue to its dorsal and caudal fins. It has what appears to be a glowing smile due to the bioluminescent bacteria that inhabit the light organs found just below each eye.

These symbiotic bacteria are responsible for its glow, which is usually white but occasionally blue or yellow depending on the mood of the fish. These fish have an amazing ability to rotate the light organ within its socket in order to turn the light on and off. The light organ is used in several ways. The most common use is to communicate among themselves by increasing the frequency of the blink. Another use is in the form of defense, turning the light on, and then quickly off while darting away from a predator. The last use for their light is to attract food in the form of plankton as these tiny crustaceans are normally attracted to light.

Flashlight Fish make an unforgettable display in the aquarium. One interesting fact about this species is that in certain locales around the world, skippers follow schools of Flashlight Fish in order to safely navigate through reef passes at night.

This nocturnal fish is well suited for the specialized aquarium that contains other nocturnal fish such as similar sized Pinecone fish, Squirrelfish, Big Eyes and Cardinalfish. A low light tank or a tank with numerous hiding places is ideal. A small group of these fish work best, as they usually will adjust more quickly and take food easier when they are maintained together. Rarely aggressive among themselves or to other fish in the aquarium, this species fares best with very passive tank mates. These fish are extremely sensitive to copper sulfate and should never be exposed to this medication.

Approximate Purchase Size: 2" to 4"

Please note: We guarantee that ALL aquaria species we offer will arrive alive and in good condition. However, because of the increased level of care required for this particular species, it has been designated as “Expert Only.” This species is recommended only for the expert aquarist, zoo, or research institution. “Expert Only” aquatic life is exempt from our extended guarantee after their arrival.

Customer Testimonials

Leana Devore Pittsburg , PA
This fish is the best fish I have ever seen and it is one of the few I like.
1-1 of 1 testimonials

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