mangos zero Fish subzones without loot

Mangos Zero
server: 21.14
db structure:  Rel21_16_35

Bunch of zones/subzones (sorry, I can't provide the full list) are out of fish (loot). It seems like such zones have not any droptables generated. 
I attached vid to describe the process (say hello to Toothy also!) (you could start from 25+sec, sorry). It differs from the situation when you are not skilled enough (in such cases player receive "Your figh got away!" message. (Also differs from "out of time" or slowpoke/sleepy noin-reaction. In such cases player do receive "No fish are hooked" message).

Can't provide info from relevant classic as it should be, but this situation seems to be not right. Also I tried to find relevant classic fish_db (at least generated with fishinfo2 or FishingBuddy but I'm not succeed)). 

At least 3  zones approved to be "out of stock" (for test purposes maybe):
1. Filmed Swampland: Misty Reed Strand
2. Moonglade: Lake Elune'Ara
3. Feralas: Verdantis River