Animal Stories - Mono Fish


Animal-World Information about: Mono Fish

The Mono Fish is a shiny diamond shaped fish that's perfect for the brackish water aquarium!
Latest Animal Stories
Bubba - 2014-06-01
I kept mono's in my fishroom before, but not for many years. Yesterday, I came across a deal in my local fish store that I could not pass up. I bought 12 small mono's for a very low price. They are about the size of a quarter dollar coin and all appear healthy and active. I'm now in the process of moving some other fish out of a 125 gallon aquarium and rearranging it to suit the mono's. I'll keep them in freshwater for now - my well water is very hard (12 dGH) with a pH of 7.8-8.0. I'm considering adding a large group of mollies for dither fish, and maybe some small synodontis cats for clean up. I'll probably plant part of the tank moderately heavy with vallisneria which will hold up well to the mono's nibbling and even to the addition of low salt levels later on. Today I fed the mono's some raw boiled zucchini and later some live brine shrimp - already they are VERY eager eaters and their schooling behaviors are delightful! I'm looking forward to watching these guys grow and thrive in their dedicated system and hopefully will enjoy several years of their presence and activity in my home.

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Anonymous - 2014-05-05
I just got 4 mono fish and I was wondering if they came from a salt water tank, and I put them into a freshwater tank will they survive?

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Harrycall - 2013-10-08
S.O.S. Monodactylus. Hi guys. 2 months ago I bought 6 small monos in my discus tank. Yes I know. Discus are a pacific guy and mono are speedy guys. Respect between them, normally... But I tried ... They eat good but somedays one of them runs erratic movements like drunk and in 24 hours died. 3 weeks after another one of them too. And another... What is the problem? Ph 6,7 and temp 28C. The aspect of 3 others is very good and eating very fine, like discus. Please, some ideas?... Thanks! Ciclopexx@hotmail.com

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  • Michael - 2014-02-18
    That's a bad mix. Discus need a PH of 6.4-6.8 and soft water. I use 1 tablespoon of salt per 5 gals of water. The Mono fish need a PH of 7.8-8.2 and hard water. 1 tablespoon of salt per 5 gals of water is a good start for Mono fish but it will need to be much higher as they grow.
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Amit - 2013-01-23
I have 4 awesome Mono fish in my 3 ft by 1.5 ft by 1 ft tank. From last 4 months and they have grown nicely. It's a great feeling to have to keep them. Please tell me more about them to make them more healthy and happy.

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  • manoj - 2013-08-29
    Add around 1 Kg rock salt to your aquarium. They need brackish water when they get older.
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Lee smith. - 2010-10-03
I have got 5 silver monos, what is the best size tank to keep them in?

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  • Daniel750 - 2010-11-26
    A 55 Gallon tank.
  • neel - 2011-05-19
    Almost you can keep them in 2 and half feet by 15 inch by 15 inch tank.
  • Randall - 2013-06-30
    I'd say at least a 55g if not bigger for 5 of them. They get about 10' and need room to swim and grow. I have 1 in a 90g.
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Bhupesh kumar - 2013-01-31
I bought 6 young mono angels today and they seem happy in my 20 gal. Sandy aquarium it's very enjoyeble to see these cute fishes.

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  • Randall - 2013-06-30
    You are going to need a bigger tank for these guys. They are suppose to be in at least a 55g if not bigger for 6 of them. They can grow up to 10' and live up to 11 years.
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Randall - 2013-06-30
I just got a silver mono and it was in a brackish tank at the fish store. I was a little worried that he might die cause I have a fresh water tank. But he seems to be doing just fine and I am very happy with him. He loves the rocks in my tank and is very active. Great fish to add if you have at least a 55g tank they need room to swim and grow.

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Roxy - 2013-04-30
My 2 mono angels are fighting the big mono is hurting small one by bitting his skin...... What should i do knw they r my loving ones

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  • Jeremy Roche - 2013-04-30
    Try and add more places for retreat.  Areas that will break the line of sight sometimes work.
  • Anonymous - 2013-06-30
    I would get more of them..if you have the room in your tank. So its not just one getting picked on all the time.
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peesbees - 2013-04-06
I just bought a single mono and have kept it with 2 gold fish, 2 sharks, 1 ghost & few guppies! Although read that they are not fresh water fish. But they were kept in fresh water from where I bought them. Is it really a bad idea?

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  • Jasmine Brough Hinesley - 2013-04-06
    Mono Fish usually do fine as youngsters in freshwater aquariums. But as they get older they usually do better in a brackish water environment.
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praths - 2013-01-20
I have 2 silver monos in a 10 gallon tank. These guys are new and is in freshwater. Eating seems to be a concern as they have not ate since i got them 2 days ago.. As i m new to monos please give me some insight on their food habitat

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  • Jeremy Roche - 2013-01-21
    These are difficult fish to keep and they are schooling fish and should be kept in numbers.  10 gallons is too small for them.  Is your tank a freshwater set up?  Very important to find out what environment that they came from.  If the petshop had them in brackish you will need to know the salinity so you arent shocking them.
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