Banana Wrasse gone missing after adding to tank

Sorry
I switched their order on you. Wrasse can be confusing which is why we nerds use the scientific names. If its yellow it is almost certainly a canary.

The “banana”/ Thalassoma so the giant aggressive one is usually some mix of green and yellow rather then the solid yellow (save some light stripes around the mouth) that the Halichoeres/canary has.
sorry im still confused, do i have the aggressive one or the non aggressive wrasse?
 
sorry im still confused, do i have the aggressive one or the non aggressive wrasse?
Non-aggressive - canary/yellow/Halichoeres chrysus
Screenshot 2025-06-02 at 6.15.22 AM.png

Basically, if it has eye-spots, a flatish body, and transparent tail and pectoral fins, it's the non-aggressive canary.


Aggressive - Banana/Thalassoma lutescens
Screenshot 2025-06-02 at 6.15.49 AM.png

If it has a good amount of green, a torpedo-shaped body, and/or solid tail and pectoral fins, it is an aggressive and large banana.
 
I have a Paracheilinus mccoskeri that went missing today.
Have had it for over a month and everything seemed like it was going well.
She was eating and swimming around.
I have a larger Cirrhilabrus isosceles that sometimes chases it around.
Are the McCoskeri also sand sleepers and disappear.
I have a top so hopefully she is still alive.
 
I had one of these once... Found it 3 ft from the tank a couple weeks later dessicated like a mummy. I have a pretty tight lid too. Suckers like to jump even in that fraction of a second when you are in there cleaning the glass
 
I have a Paracheilinus mccoskeri that went missing today.
Have had it for over a month and everything seemed like it was going well.
She was eating and swimming around.
I have a larger Cirrhilabrus isosceles that sometimes chases it around.
Are the McCoskeri also sand sleepers and disappear.
I have a top so hopefully she is still alive.
No
Both Paracheilinus and Cirrhilabrus are members of the Chelinae subfamily who sleep in rock crevices in mucous cacoons. They can still hide well in said rock crevices so there is a reasonable chance.
 
No
Both Paracheilinus and Cirrhilabrus are members of the Chelinae subfamily who sleep in rock crevices in mucous cacoons. They can still hide well in said rock crevices so there is a reasonable chance.
@i cant think now that I've gone full nerd maybe you can help out.
 
Update: Banana wrasse went back into hiding for a whole day, came out this morning for a few minutes then went back to hiding, missed it going into the sand or under a rock so i have no clue where it is again..
 
I have a Paracheilinus mccoskeri that went missing today.
Have had it for over a month and everything seemed like it was going well.
She was eating and swimming around.
I have a larger Cirrhilabrus isosceles that sometimes chases it around.
Are the McCoskeri also sand sleepers and disappear.
I have a top so hopefully she is still alive.
Mccoskeri is one that if you have a sofa next to your tank, check behind the pillows. I had a hybrid Paracheilinus which jumped (unfortunately I didn’t notice until it was too late), I didn’t find it until 3 days later behind a cushion.

Paracheilinus can also hide within the rocks if there is another bully that’s too much for them.
 
update: its now gone into hiding for almost two whole days now, no sign of it anywhere. will it be fine? because i did move two rocks in my tank (did put them back in original spot after) while catching a pest crab, afraid he might of gotten crushed...
 
These are both formerly called coris wrasse, now properly called yellow wrasse or canary

They are peaceful and will sleep in the sand. The one with face markings is a male. The one with the dots is female
CE596C6F-1C07-440B-9BAF-616EEB93F47E.jpeg
82275D15-1FE0-4AA9-848B-BAD5A9AC5791.jpeg
 
update: its now gone into hiding for almost two whole days now, no sign of it anywhere. will it be fine? because i did move two rocks in my tank (did put them back in original spot after) while catching a pest crab, afraid he might of gotten crushed...
If they get scared they can hide for long periods of time. Days. A week. Stop moving things and don’t go digging for him. If they want to come out they will dig their way out
 
These are both formerly called coris wrasse, now properly called yellow wrasse or canary

They are peaceful and will sleep in the sand. The one with face markings is a male. The one with the dots is female
CE596C6F-1C07-440B-9BAF-616EEB93F47E.jpeg
82275D15-1FE0-4AA9-848B-BAD5A9AC5791.jpeg
mine has a single dot AND the markings on the face....
 
If they get scared they can hide for long periods of time. Days. A week. Stop moving things and don’t go digging for him. If they want to come out they will dig their way out
update: just as i posted that he came out of hiding for a few seconds then when i turned back around he was gone....
 

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