Blue and Gold Blenny
Ecsenius lividanalis
Saltwater Fish
Species Group: Blenny
Family: Blenniidae
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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 Blue and Gold Blenny
General information
The Blue and Gold Blenny, also known as the Jewel Blenny, is a small and colorful saltwater fish that can reach up to 3 inches (8 cm) in length. It has a vibrant blue body with bright yellow stripes and a distinctive black spot on its dorsal fin. These fish are generally peaceful and can be kept in community tanks with other small, non-aggressive fish.
Diet & nutrition
In the wild, the Blue and Gold Blenny feeds primarily on small crustaceans and plankton. In captivity, they can be fed a varied diet of frozen or live foods such as brine shrimp, mysis shrimp, and krill, as well as high-quality pellets and flake food.
Determining sex
It can be difficult to determine the sex of Blue and Gold Blennies, as there are no distinctive physical differences between males and females. However, males are generally more colorful and may exhibit more aggressive behavior during breeding season.
Breeding & spawning
Breeding Blue and Gold Blennies in captivity can be difficult, as they require specific conditions and may exhibit territorial behavior during breeding season. Females will lay their eggs on a flat surface or inside a crevice, and the male will fertilize them. The eggs will hatch in 3-4 days, and the fry can be fed newly hatched brine shrimp or rotifers.
Diseases
Blue and Gold Blennies are generally hardy fish and are not prone to many diseases. However, they can be susceptible to common saltwater fish diseases such as ich, velvet, and fin rot. It is important to maintain good water quality and avoid overcrowding to prevent disease outbreaks.
Origination
The Blue and Gold Blenny is native to the Western Pacific Ocean, specifically around Fiji and Tonga.
Cautions
Blue and Gold Blennies are generally safe to keep in a home aquarium and are not known to be harmful to humans. However, they may exhibit territorial behavior towards other fish during breeding season and should be kept with non-aggressive tankmates. Additionally, they may jump out of open aquariums, so a tightly fitting lid is recommended.
Acclimation process
When introducing a Blue and Gold Blenny to a new aquarium, it is important to acclimate them slowly to avoid stress or shock. The drip acclimation method is recommended, where the fish is gradually introduced to the new water over a period of several hours.
All photos
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