Black Angler

Antennarius commersoni

Saltwater Fish Species Group: Anglers and Frogfish Family: Antennariidae

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Water parameters

Temp 76-80 F Temperature

Maintaining a stable and appropriate temperature is critical for the survival of aquatic life.

pH 7.8 - 8.4 potential of Hydrogen

Measuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.

NO3 1-20 ppm Nitrate

While less toxic than ammonia, high nitrate levels (above 40–80 ppm) are important to monitor because they can cause fish stress, stunted growth, and harmful algae blooms.

NO2 <0.0001 ppm Nitrite

It is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia

PO4 0.01 - 0.1 ppm Phosphate

It is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.

NH3 <0.1 ppm Ammonia

It is the primary killer of aquarium fish, causing gill damage, stress, and death

Ca 380 - 450 ppm Calcium

Supporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae

KH 8 - 12 dKH Alkalinity

It acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.

Mg 1200 - 1400 ppm Magnesium

It enables coral growth by supporting skeletal formation, assists in metabolic processes, and ensures that calcium is available for corals, clams, and coralline algae.

SG 1.023 - 1.026 SG Salinity

Essential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals

ORP 250 - 400 mV Oxidation-Reduction Potential

A higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.

About Black Angler

General information

The Black Angler is a saltwater species of anglerfish, also known as the Commerson's Frogfish. They have a distinct and unique appearance, with their flattened body and fleshy growths that resemble small bumps or warts. They are also known for their ability to change color, making them excellent at blending into their environment. The Black Angler typically grows up to 7 inches in length and requires a minimum tank size of 30 gallons.

Diet & nutrition

The Black Angler is a carnivorous species that primarily feeds on small fish and crustaceans. In an aquarium, they can be fed a diet of frozen or live meaty foods such as krill, shrimp, and small fish.

Determining sex

It can be difficult to determine the sex of a Black Anglerfish as there are no visible differences between males and females.

Breeding & spawning

The Black Angler is difficult to breed in a home aquarium setting and is not commonly bred in captivity.

Diseases

The Black Angler is generally hardy, but they can be susceptible to common saltwater fish diseases such as ich and marine velvet. Keeping the water clean and well-maintained can help prevent these diseases.

Origination

The Black Angler is native to the Indo-Pacific region, including areas such as the Red Sea, East Africa, and Australia.

Cautions

The Black Angler has a venomous spine on its dorsal fin that can cause a painful sting if handled. It is important to exercise caution when handling this species and wear protective gloves.

Acclimation process

The Black Angler should be acclimated slowly to its new environment to prevent shock. This can be done by gradually adding small amounts of water from the aquarium to the transport bag and allowing the fish to adjust to the new water conditions over a period of several hours.

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