Pistol shrimp attacking dottyback? Or disease?

[Fiver]

I introduced a tiger pistol shrimp into my tank about a week ago to partner with my yellow watchman goby. Both live under/in the biggest rock, which was also home to my orchid dottyback. I noticed on the second day that the dottyback was hanging out around a different rock. Such was the case for a few days.

The dottyback eventually returned to the big rock. But now I notice that it looks like its scales are scraped off its right side near the tail. There's also a similar scrape across its forehead. Its tail and right pectoral fin are a little ratty, too.

Is it being attacked by the pistol shrimp? Goby, two clowns and lawnmower blenny show no signs of distress/damage.

Thanks!

 

[ThRoewer]

The shrimp could certainly have done this, though I'm not really convinced it did it.

What pumps do you have and do you sometimes turn them off?

I lost a good number of orchids because they liked to explore the insides of turned off pumps. I have now programmed my Jebao pumps to "stutter" when in idle mode, but unfortunately the Apex WAV pumps don't allow that...

 

[Fiver]

The shrimp could certainly have done this, though I'm not really convinced it did it.

What pumps do you have and do you sometimes turn them off?

I lost a good number of orchids because they liked to explore the insides of turned off pumps. I have now programmed my Jebao pumps to "stutter" when in idle mode, but unfortunately the Apex WAV pumps don't allow that...

I have a Tunze and Jebao at opposite ends. I only turn them off during water changes. They're also wrapped in filter padding to protect my BTA.

 

[ThRoewer]

With my orchids the issue was never that they got sucked into the side of the pump but rather that they entered it through the front when the pump was off. So padding would not give much protection but rather increase the attractiveness of the "cave".
But if your pumps are rarely off it is likely something else.

Tiger pistol shrimp are among the larger and more aggressive of the pistol shrimp, so it is likely that it pinched the dottyback if it didn't leave after the first warning shot.

Sent from my XT1254 using Tapatalk

 

[Fiver]

With my orchids the issue was never that they got sucked into the side of the pump but rather that they entered it through the front when the pump was off. So padding would not give much protection but rather increase the attractiveness of the "cave".
But if your pumps are rarely off it is likely something else.

Tiger pistol shrimp are among the larger and more aggressive of the pistol shrimp, so it is likely that it pinched the dottyback if it didn't leave after the first warning shot.

Sent from my XT1254 using Tapatalk

I see. Thanks for the input. Appreciate it. My dottyback is quite the explorer.