Ruby Anthias
Paranthias colonus
Saltwater Fish
Species Group: Anthias
Family: Serranidae
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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 HydrogenMeasuring the acidity or alkalinity of water on a 0–14 scale, where 7 is neutral, 7 is alkaline.
NO3 1-20 ppm NitrateWhile 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 NitriteIt is a highly toxic, intermediate compound in the nitrogen cycle produced from broken-down ammonia
PO4 0.01 - 0.1 ppm PhosphateIt is essential for plant development but must be managed, as excess levels trigger nuisance algae blooms and inhibit coral calcification.
NH3 <0.1 ppm AmmoniaIt is the primary killer of aquarium fish, causing gill damage, stress, and death
Ca 380 - 450 ppm CalciumSupporting the growth, skeletal structure, and shell formation of corals, mollusks, crustaceans, and coralline algae
KH 8 - 12 dKH AlkalinityIt acts as a shield, neutralizing acids to prevent dangerous pH "crashes" that can harm fish, corals, and plants.
Mg 1200 - 1400 ppm MagnesiumIt 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 SalinityEssential for maintaining stable, natural water parameters, proper osmoregulation, and stress-free environments for marine fish and corals
ORP 250 - 400 mV Oxidation-Reduction PotentialA higher positive mV indicates clean, oxygen-rich water with high water quality, while low readings indicate high pollution.
About Ruby Anthias
General information
The Ruby Anthias, also known as Colonus Anthias, is a beautiful and colorful fish species that is popular among saltwater aquarium enthusiasts. They are relatively small in size, reaching up to 3 inches (7.6 cm) in length. These fish are peaceful, and can be kept in a group in a properly sized aquarium, as they are known to form schools in the wild. They are also known for their unique swimming patterns, which make them a joy to watch.
Diet & nutrition
In the wild, Ruby Anthias feed on plankton and small crustaceans. In an aquarium setting, they can be fed a variety of small frozen or live foods, such as brine shrimp, mysis shrimp, and small pieces of fish or shrimp. It is important to provide a balanced diet to ensure the health of the fish.
Determining sex
Ruby Anthias are sexually dimorphic, which means males and females look different. Males have a more pronounced red coloration on their body and fins, while females have a less vibrant coloration. It can be difficult to distinguish between males and females, especially in younger specimens.
Breeding & spawning
Breeding Ruby Anthias in an aquarium setting can be challenging, as they require specific conditions to successfully reproduce. Males will typically display courtship behavior towards females, and if conditions are favorable, the female will release her eggs into the water column. The eggs will then be fertilized by the male, and the larvae will hatch and begin to develop.
Diseases
Ruby Anthias are generally hardy fish and are not known to be susceptible to many diseases. However, like all fish, they can be affected by common ailments such as ich and bacterial infections. It is important to maintain good water quality and provide a balanced diet to keep them healthy and prevent disease.
Origination
Ruby Anthias are found in the western Atlantic Ocean, from Florida to Brazil, and in the Gulf of Mexico.
Cautions
Ruby Anthias are generally not considered to be harmful to humans. However, it is important to handle them with care to avoid injuring them or causing stress. It is also important to ensure that any other fish in the aquarium are compatible with Ruby Anthias in terms of temperament and size.
Acclimation process
When introducing Ruby Anthias to a new aquarium, it is important to acclimate them slowly to avoid stress and shock. This can be done by gradually adding small amounts of water from the aquarium to the shipping bag over a period of time, or by using a drip acclimation method. It is also important to monitor water quality parameters during the acclimation process.
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