New fish always disappear after one night

[ScRmptisSnkhds723]

I have a 60 Gallon Reef tank that has been set up for around 1.5 years, currently I have 4 fish in the aquarium which are an Azure damsel, a Tomato Clownfish, a Pajama Cardinal and an algea blenny. The damsel and pajama Cardinal and damsel were the first fish that i added to the aquarium a month after cycling. The two others came a few months later. I have never been in a rush to stock this tank but It's very frustrating because new fish always disappear after one night. Cardinals, Gobies and more. longest i got was a wrasse which lasted 2 months. When i add these new fish i ensure theyre acclimated and i rarely see them get bullied upon entry, more like politely ushered to the back of the tank. Im not sure what to think. Predators, shock or night time aggression. what should i do. I have other livestock such as cleaner shrimp and a red legged hermit crab, if this helps give an insite. Aggression is at the top of my suspect list as the tomato will attack my hand if it gets the chance, even then I haven't ruled out everything and am still undecided

 

[Subsea]

Please provide a full tank shot with white light.

I am interested in seeing rock scape and hiding places for new fish.

 

[ScRmptisSnkhds723]

Please provide a full tank shot with white light.

I am interested in seeing rock scape and hiding places for new fish.

 

[Subsea]

Tank looks great. More rock and hiding places might help.

New fish are always at a disadvantage with aggression from established fish in tank. Consider adding more than one fish at a time. I suspect your tomato clown may be the problem. You might consider removing him.

 

[Mr_Knightley]

If they're completely disappearing, I wouldn't rule out a large polyclad flatworm or other such predator. I had one in my tank for a long time, and it would somehow not eat my established fish but dined on the new ones that I guess just didn't have a hiding spot yet. Do some observation at night with the lights out to see if you can find anything.

 

[ScRmptisSnkhds723]

Tank looks great. More rock and hiding places might help.

New fish are always at a disadvantage with aggression from established fish in tank. Consider adding more than one fish at a time. I suspect your tomato clown may be the problem. You might consider removing him.

im thinking of trading in the clown and isolating the damsel for a while as he doesn't seem like that much of a culprit, however I'll still be cautious.

 

[ScRmptisSnkhds723]

If they're completely disappearing, I wouldn't rule out a large polyclad flatworm or other such predator. I had one in my tank for a long time, and it would somehow not eat my established fish but dined on the new ones that I guess just didn't have a hiding spot yet. Do some observation at night with the lights out to see if you can find anything.

All my new fish are sent to the back corner of the aquarium by my older ones , the new fish often hang out around there and disappear the next morning

 

[Cael Gallery]

It's probably the clown or the anemone