A problem with my guppies

[Rohith]

I have a problem here I had 4 guppies two black one with large fins and two orange ones at starting they were doing well but last week two black guppy died and one had its fun bitten by something.and now one of my two guppies is chasing each other.
I seems they are bitting
And I have a doubt that one my fish is pregnant.
Please clear it asap.
The small guppy is very energetic and biting the bigger one I think so.
It was very hard to click the picture sry for blurry images.

 

[Colin_T]

Hi and welcome to the forum

How long has the tank been set up for?
Has the filter cycled (developed the colonies of beneficial bacteria that keep the water free of ammonia and nitrite)?

Have you checked the water quality for ammonia, nitrite, nitrate & pH?
If yes, what are the results in numbers?

How long have you had the fish for?
How often do you do water changes and how much water do you change?
Do you gravel clean the substrate when you do a water change?
Do you dechlorinate the new water before adding it to the tank?

Do you have any plants in the tank?

------------------------------
Do a 75% water change and gravel clean the substrate every day until we work out what is going on.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.

Reduce feeding to once a day.

Put some plants in the tank to break up territories.
If you have a light over the tank, you can keep live plants like Ambulia, Hygrophila polysperma, H. ruba/ rubra, narrow Vallis, common Amazon sword plant, and Water Sprite (Ceratopteris thalictroides/ cornuta).

The Water Sprite floats on the surface but can also be grown in the gravel. The other plants should be planted in the gravel.

If you don't have a light above the tank, then use plastic plants.

 

[Naughts]

Hi Rohith,
sorry your fish died.
Are the fish in a bowl? If yes, is there a filter?
Or is it a biorb? If you use gravel in a biorb the filter is not very effective.
Follow Colin 's advice to improve the water quality for the remaining fish and post more information please.

 

[PheonixKingZ]

I believe @Rohith, double posted.

 

[Rohith]

Hi and welcome to the forum

How long has the tank been set up for?
Has the filter cycled (developed the colonies of beneficial bacteria that keep the water free of ammonia and nitrite)?

Have you checked the water quality for ammonia, nitrite, nitrate & pH?
If yes, what are the results in numbers?

How long have you had the fish for?
How often do you do water changes and how much water do you change?
Do you gravel clean the substrate when you do a water change?
Do you dechlorinate the new water before adding it to the tank?

Do you have any plants in the tank?

------------------------------
Do a 75% water change and gravel clean the substrate every day until we work out what is going on.
Make sure any new water is free of chlorine/ chloramine before it's added to the tank.

Reduce feeding to once a day.

Put some plants in the tank to break up territories.
If you have a light over the tank, you can keep live plants like Ambulia, Hygrophila polysperma, H. ruba/ rubra, narrow Vallis, common Amazon sword plant, and Water Sprite (Ceratopteris thalictroides/ cornuta).

The Water Sprite floats on the surface but can also be grown in the gravel. The other plants should be planted in the gravel.

If you don't have a light above the tank, then use plastic plants.

Tysm