Bicolor Blenny Fish Care Guide – 8 FAQs

What Is The Best Tank Setup For A Bicolor Blenny?

The bicolor blenny has unique personality that distinguishes it from other fishes. They generally live their lives amid rocks and crevices deep down inside water. So when you are setting up their tank, it is advisable to get rock particles scattered all over the bottom of the tank for hiding and perching. Naturally, Blenny is known to live some reasonable meters away from the surface of water. So you need to fill your tank with enough water so they can be comfortable staying at the bottom of the tank. Don’t put more than one blenny in a tank because they can feed on themselves.

The blennies can live peacefully in tanks but they need lots of space to move around freely without hitting against the tank. Therefore, endeavor to create more space (minimum of 30 gallon) for each blenny. Water management is another great aspect to consider when taking care of blennies. The water quality should be kept clean always by changing about 10 to 15 percent of it every month.

The pH value of the tank should be kept between 8.1 and 8.4 for best performance, and a temperature of 21oC to 28oC should be maintained.

What Are The Best Tankmates For The Bicolor Blenny Fish?

Blenny can thrive in an environment that has other species of fish, however caution must be taken when selecting the kind of mates to introduce. For example, you wouldn’t want to put fish that are bigger than blennies in the same tank because the blennies are likely to be converted to menu in hard times. I have seen some few cases where people put blennies with other species, but the size of the tank must be large enough for both species to live separately. Bicolor blenny likes to have a space to itself and you need to respect them for that.

If you must find a tankmate for blennies, then I have seen Malacanthid in the same thank with a blenny. But if you know your tank is not large enough, I will advise you live your pretty blenny to enjoy itself alone. You wouldn’t want to see the conflict that will arise when you put a blenny with another mate. From my personal experience, I will say that you should leave a blenny to a tank if possible. If you need to have another blenny or another different specie, you can get another tank for that. This will be the best practice for you because it will save you from losing any of your pets.

Can They Share Their Tank With Their Own Kind?

Keeping blennies together in the same tank is never a good idea. I for one wouldn’t do that and I expect you not to. Although I have seen some few cases where people put them together, but from my experience with this fish, it is kind of risky to do that. Let me share an experience with you. I used to have a tank with two bicolor blennies some years back. At the initial stage when they were small, they lived their lives peacefully, each respecting its own space. But as time went on and they became bigger, that was when I realized it wasn’t  a good idea.

Since they feed on the same food and act similarly, the tank became unbearable for both of them. Maybe my tank wasn’t big enough, that I can’t say, but their aggressive behavior towards each other made me confirmed that it is not a nice idea putting blennies together in a tank.

So if you must, for any reason, put two blennies in the same tank, you must ensure that the tank is big enough to contain them. Feeding must be done at the appropriate time to avoid cannibalism.

Where Is Their Native Location?

Although you can keep blennies at home as pet, they are originally found in some few certain parts of the world. They live in salt waters, which makes them limited in only some regions. The bicolor blennies are found in Maldives, Phoenix Island, Samoa, southwards to the Great Barrier Reef, Ryukyu Islands, and Micronesia. Blennies are decreasing in population and this has led to some measures put in place to prevent their extinction.

Among the countries where you can find blennies include American Samoa, Indonesia, Australia, Cocos Island, India, Guam, Fiji, Kiribati, Japan, Marshall Island, Maldives, Malaysia, Philippines, Papua, Solomon Island, Samoa, Papua New Guinea, Nauru, Myanmar, New Caledonia, Taiwan, Sri Lanka, Thailand, Tonga, Tokelau, Hawaiian Island in the United States, Northern Mariana Island, Province of China, Tuvalu, Wallis, Futuna and Vanuatu.

If you wish to fish for bicolor blennies, there are some native fishing areas that are FAO marine fishing approved. They include western Indian Ocean, eastern Indian Ocean, eastern central of the pacific, and northwest of the pacific.

What Is The Ideal Water Temperature?

As you already know, bicolor blenny is a natural occurring fish that is found in salt waters in the Pacific and Indian Oceans. For this reason, if you must own this beautiful creature as a pet, you must ensure that their living condition in your tank is similar to their natural habitat.

Most people are ignorant of the fact that there is an ideal temperature required for blennies to thrive. Ideally, a temperature of 75 to 85oF or 24 to 29oC should be maintained if possible to make the fish feel at home. It is okay if you can’t get the exact ideal temperature but water temperature in your tank should be very close to the ideal readings if you must keep blennies as pets.

When it comes to keeping fish as pet, one major factor to give full attention is water management. Blennies can be kept in reef aquarium, but if the temperature of the water in the tank is not favorable to the fish, it could lead to stress and subsequently diseases. The water temperature is one aspect you should consider because a lot of people have lost their precious pet due to poor water temperature.

Is It Easy To Breed Them?

Breeding of bicolor blennies is quite possible but challenging if you must know. When they are in their natural or native habitat, it is quite easy for the females to lay eggs in crevices, and guard them until they are ready to hatch. Spawning in a home aquarium is a different ball game and will require some effort from you if you must succeed.

For breeding to take place, both the male and female fish must come together. This means that they must be kept in the same tank. At first, you will notice some kind of serious fight between them, then after sometime they will go to their various hiding place to rest. Fertilization takes place after some days and the eggs are hatched.

Now, after hatching, breeding these fries is where you have to be extra-careful in order not to lose them. Majority of most people’s stories I have read online were all successful in hatching, but lost virtually all the fries subsequently. This was due to wrong feeding practices and lack of water maintenance. You need to change about 10% of the water daily and feed them moderately with rotifer.

So like I said, getting the male and female to come together for fertilization, laying of eggs and hatching is possible and requires less stress. However, the main issue is breeding them from fries, fingerlings, juveniles and then to adult.

Do They Lay Eggs?

Yes they do lay eggs. For fertilization to occur, the male and female need to come together. It is somewhat difficult to determine the sex of blennies, but their sizes might help out. It is always a case of the males being bigger in size than the females.

For the home aquarium, the male and the female are put together in the same tank. At the initial stage, their behavior towards each other will be so aggressive, but with time, they will learn to accommodate each other and mating will occur. It may take some months after bringing them together before fertilization takes place.

In their natural or native habitat, once fertilization has taken place, the female prepares a comfortable place for itself for laying of eggs. This is usually done in holes and crevices which is the best place they like to dwell in the water. It takes some days for the female to lay all the eggs before guarding it until the time of hatching.

How Effective Are Bicolor Blenny For Algae Control?

Algae is a living organism that thrives in an environment that has enough sunlight and nutrients. If your tank is placed close to a light source, there is high chance of heavy algae growth. Also, a salt water tank must be kept clean and well filtered to prevent the buildup of phosphate and other nutrients that encourages algae growth.

However, if your tank is already infested by algae, it could be quite challenging to get rid of the algae completely. One of the most effective control measures to use is bicolor blennies. This fish species can help you control algae to a reasonable amount. This doesn’t mean that because bicolor blennies can fight algae, then you should be ignorant of the cause of algae growth.

So instead of allowing your tank to become infested by algae, you can move it away from sunlight if it is suited in a position that receives too much light. You can also control the buildup of nutrients in the water so that you don’t provide a breeding ground for algae.

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