3D mouth of an ancient jawless fish suggests they were filter-feeders, not scavengers or hunters
Early jawless fish were likely to have used bony projections ... they would also have found it difficult to scoop and filter ...
Hackaday2y
The FishFeeder Keeps Your Fish Fed While You’re Away
If you’ve got an aquarium and want to keep your fish well-fed during your vacation, then [FoxIS]’s internet-connected automated fish feeder might come in handy too. The heart of the system is ...
PetMojo on MSN4d
What Size Filter Do I Need for My Fish Tank?
Many new fish tanks have in-built filters, but this isn’t always the case, making it important to get the appropriate model ...