fish aggression

I have a 6 lined wrasse who I suspect is behind the death of my latest three fish additions. He was added about 8 months ago, and was the last fish that survived being added to my tank. Since his addition, I've tried to add a yasha goby and two banggai cardinalfish. The yasha disapeared...

I have a 36”x12”x18” tank and was planning the following stock list, but was curious about a fifth fish: 2x clownfish (probably ocellaris) 1x royal gramma 1x orange spotted goby For a fifth fish: A firefish, hawkfish, Blenny, splendid dottyback, or carpenter flasher wrasse although I imagine...

Have you had experience with blue streak cleaning wrasse attacking fish? What can I do to make the environment better. The fish have been in the same tank for about 6 months with no issues. Ours has been darting towards our Midas able. Y nd now he is afraid to come out. Every time he tries to...

Hey guys, Ive had this orange shoulder tang for a month or so now and about 2 weeks ago my other tang bullied him and he hid a lot. He wasn't eating and had damage to his tail. He's slowly been coming out again and being more active, but I noticed that he now has these weird marking on him and...

Hello. I would like to know, in your experience, which fish is more peaceful: Pseudochromis fridmani (Orchid Dottyback, also known as the Fridman's Dottyback) or Gramma loreto (Royal Gramma)? Will there be trouble with Blue Sapphire Damselfish (Chrysiptera cf. springeri) or Firefish...

I have a IM 25 Lagoon and have 4 fish at the moment 2x Clownfish 1x Pygmy Cherub Angelfish 1x Rainford Goby I have had the Angelfish and Clowns for over 3 months now and have tried to add 3 new fish to the tank since. Every time I add a fish the Cherub Angel attacks and harasses the new fish...

Hi, I’ve had this Vlamingi Tang for a couple months now and he has been a family favorite. He is super friendly, eats aggressively, gets along with tank mates (Invited my Vampire Tang to school with him and other fish after a day), and overall a super great fish. He has never shown any negative...

Hey y'all! I've been wandering if i could keep 3 pairs of clownfish together in a community tank and just how big that aquarium would need to be. Do any of you have experience with something like this? Maybe i could put two anemones on opposite sides of the tank and a third one somewhere in...

Assume: All fish are introduced at the same time Proper filtration All fish quarantined Mix of tangs from nasos to kole tangs. ie 1 or 2 of each species Thank you!

We've had a powder blue tang for about a month with no problems. Last night something beat the hell out of her. Chunks missing from fins. We have not added any new livestock and I have never seen anything harassing her. I've got her in an isolation box but she's not doing well. Anything...

Hello! Im working out what fish I would like to keep for a waterbox 110.4, which is 48 inches long. and around 20 inches deep. I plan on making it a sps tank. Can anyone review the fish choices here? From my research i don't see any major conflicts going on, but i would like to make sure just...

Hello, I had a quesiton, could I have two sailfin tangs, a unicorn tang and a yellow eye kole tang together in the same tank. Currently In the tank is one sailfin tang that has been there for about three months alone.

What’s up guys, after having fun with my fluval 13.5 I decided to finally get an actual sizable reef tank a NUVO 40L, so now I’ve got the tank setup and cycling and I’m planning out the stocking choice for it all. I want to make a mixed reef with this tank but I also want some more interesting...

Yesterday, I got a QT'd midas blenny that I had in an acclimation box overnight and none of my fish paid attention to it. This morning, I released it into the tank before the lights went off and my starry blenny is going after it. The starry blenny is significantly larger than the midas blenny...

My diamond watchmen goby just attacked my mandarin dragonet! He isn’t hurt that bad but he will in the mouth of the goby! His tail fin is cut up a bit but he doesn’t seem too bothered. Will he make it through??? :(

There are several techniques for catching a fish out of a reef tank. None of them are perfect or work equally for all fish, and many require time and patience. I have a 330 gallon mixed reef that's about 16 months old. In the past year, there have been a couple occasions where I've needed to...

Hi guys I am finishing up stocking my 210 gallon reef tank qnd I am ready to add my tang gang I had planned on adding 3 of them but can't decide on the mix so I am looking for personal opinions on what has worked for you to avoid aggression. Trying to decide on a tomini, yellow, purple...

Hi. My aquarium is almost a year old. Got bicolor who’s slightly bigger attacking everyone especially flame. Yesterday I added another 40 pounds of rock, built plenty of extra caves. But they’ve been at it for few days ever since I got them. First one died, didn’t make acclamation so bicolor...

Hey guys I have a 40 gallon reef tank set up and it’s almost out of the cycling stage. I plan on keeping hardy corals in there and adding them once the tank is about 3-6 months old, or at least after the algae bloom stage is over. I am thinking of adding the following fish: - 1x Clownfish: I...

Just looking For second opinions on my stock list. I’m also a big worrier when it comes to negative interaction between tankmates so call me out on any possible aggression in this group. to my new tank I’ll add new fish first, For my “sand level” fish I’m thinking of going with a Hi-fin and a...

So I do believe I have a quoyi parrotfish. I have had him for over a year now and never really had any problems with him untill recently. He doesn't pick at any corals thankfully but he's become a bully ever since I got a upgrade from 150 to a 300g. All the original fish that were in the 150...

Is adding my fish all at once a good idea? I have a 90 gallon tank with a 110 rated canister filter, and was wondering if it would be smart to do this, since it would reduce aggression and allow them to all choose their tanks at the same time. Let me know your thoughts, thanks have a great day.

Hey Everyone, My current setup is a Reefer 350 (73 gallon display - not including sump) and my fish stock is: 2 Snow Storm Clownfish 1 Yellow Tang 3 Lyretail Anthias 1 Royal Gramma My most recent addition (about three weeks ago) was the Royal Gramma. He spends most of his day hovering around...

I have a 1.5 year old 16 gallon mixed reef tank. I have read several threads talking about royal gamma aggression and that it normally calms down. My question is where do I draw the line? I recently added a yellow watchman and the royal gamma has really been going after him. The watchman seems...

Hello everyone! I need help introducing fairy wrasses to my dt! I know every fish is different and may have different mannerisms but I want to add a lot of wrasses to my display tank and I want you all to offer me some guidance and the order of introduction as well as shut my ideas down if you...