Dojo Loach or pond loach is a freshwater fish of the Cobitidae (loach) family. They are also known as the weather loach since they can identify the fluctuation and changes in the barometric pressure, particularly before a storm. These fish share their alternate name weather loach with species of their family as well as those of the Misgurnus genus. Their pleasant demeanor and hardy nature, make them a preferred choice as an aquarium fish. They are raised through fish farming in East Asia owing to their culinary use.
Scientific Name | Misgurnus anguillicaudatus |
Origin | Different parts of Asia including Central China, Japan, Hainan, Siberia, and Korea |
Type | Freshwater fish |
Conservation Status | Least Concern (by the IUCN) |
Behavioral Characteristics | Active, peaceful, hardy, mostly displaying friendliness towards humans allowing them to feed through the hand, shows aggression when kept with smaller fish species |
School Size | 3 – 4 |
Physical Traits | Slender, cylindrical, eel-like body, circular towards the frontal part, flattening at the rare end; possesses five pair barbells near its mouth, and can have a thin or heavy body stature |
Colors | Orange, grey, albino, and pink, with dark brown spots seen in some, creating a marbled pattern |
Size (How big do they get) | 11.3 inches ( 28.58 inches); in an aquarium set up the largest dojo loach was recorded to grow up to a length of 8.46 inches (21.4 cm) in a home at Nova Scotia |
Lifespan (How long do they live) | 7 – 10 years |
Sexual Dimorphism | Present; Males: Long, thick pectoral fins upon which they often stand while resting in the bottom of the fish tank; Females: Round pectoral fins |
Probable Diseases | Ich |
Approximate Price (How much is it for) | $8 – 15 |
Care Level | Beginners |
Tank Size | 30 gallons (113.5 liters) for one fish |
Water Parameters
pH Level | 6.0 – 8.0 |
Temperature | 68 – 76 °F (23 – 27°C) |
Hardness | 5 – 12 dGH |
Aquarium Water Flow | Moderate |
Tank Ambience
Lighting | Low and subdued |
Substrate Type | Sand, gravel, and pebbles (to hide themselves) |
Tank Mates | Compatible with: Goldfish (particularly the fancy varieties like the lionhead, black moor, and bubblehead), angelfish, bettas (though the loaches could sometimes attempt to nip their fins) and other species which live on the upper levels of the tank so that the dojo loach might not have to share their territory with them. Might be kept with invertebrates like Ghost and Amano shrimps but with caution since the latter serves as the Dojo’s meal, Incompatible with: Bottom dwellers like catfish species; |
Suitable Position in the Tank | Bottom |
Feeding
Diet | Live or frozen bloodworm, brine shrimp, and tubifex, flakes, spirulina-based pellets, vegetables like zucchini, cucumber, and shelled peas medallion that they readily accept; will also readily eat any snails moving in the aquarium as that is their favorite food |
Frequency | 2 – 3 times a day |
The golden variety of the dojo loach is often confused with the kuhli loach due to their striking similarities especially when young, but in actuality they are two separate species with visible differences. The kuhli loaches are smaller, preferring warm water, compared to the dojo loach that like to live in cold water.
Certain countries like Britain have put a ban on their sale under the pretext of this species causing harm to the aquatic ecosystem. The U.S state of Michigan has also banned keeping or petting this fish.
The golden dojo loach is not a different species but a color morph of the dojo loach, ranging from shades of yellow to orange.