Is My Tank Size Suitable?

[LosJames]

I have a 55 Gallon tank measuring around 48x19x13 inches.. Here is whats in it

x2 violet/dragon gobies : 1 is 8 inches long the other around 7

x4 polypterus senegalus : biggest one right now is just over 4 inches

x2 affrican cichlids : again not that big

x2 knight gobies : small, maybe 3 inches long

x2 green spotted puffers : I hate these vicious #19###s and wont be in here for much longer

so far my fish seem comfortable but I'm thinking about the long run...Do you think they will have room to grow or should I get rid of a couple?
Whats your opinion

Also what do you think about my population.. decent mix?

 

[MBOU]

Ouch!

The Dragon Gobies and the Senegal Birchir are going to outgrow the tank.

The african cichlids need to be in larger groups.

The Knight Gobies and Green Spot puffers are probably aggressive because they are unhappy, both need to be in a brackish system with salt. The puffer will end up fully marine before it hits adulthood...

Time for a tank mix up i think. I would advise rehoming the goby and puffers.

 

[minnnt]

I would look into a complete new stock list...