http://onlinelibrary.wiley.com/doi/10.1002/spp2.1040/full (if you want a .pdf email me)
A bit of background, the fossil is from the Kallamedu formation of SE India. The area has been published on a fair bit as it is one of the largest Cretaceous exposures of fossil bearing strata in India. That being said it is still remarkably poorly represented in publishing when compared to the North and Central regions known for the intertrappean layers where small pockets of material lay between the massive Deccan trap eruptions layers. These areas are interesting for the sheer size of the erupted material as it covers an area the size of Texas twice over, and to a depth of up to 2km in places. The eruption has also been implicated by some for climactic events that led to the demise of the dinosaurs (either with or because of the meteor that hit Mexico).
I digress again, back to the site in the Kallamedu. The fossils found in the formation are typical of Gondwanan locales of similar late Cretaceous age, with teeth of crocodilians, abelisaurid and troodontids dinosaurs, bones of titanosaur sauropods, bothremydid turtles, and fish scales. The sediment is a mix of clays and sandstones and has been interpreted as a fluvial/deltaic region with occasional marine influence. Thus it may not come as a surprise you find fish teeth in it, however the type of teeth is what makes them interesting.
After much ado:
|From Halliday et al., 2016 - Photographs in lateral, occlusal, and apical views of specimens DGUF/145 (left) and DGUF/146 (right). Scale bar = 1cm.|
The most interesting thing to derive from two otherwise minute underwhelming fossils is that the fish is otherwise unknown from India in the Cretaceous. The taxa has only ever been found once before in the Cretaceous, although indeterminate fossils belonging to the family have been found across Eurasia from this time. The only other definitive occurrence is from Madagascar showing the close links these two regions maintained in terms of what animals were there despite the fact that Madagascar and India were joined until about 85 million years ago (about 20 million years earlier than these fossils). Keep an eye out for another paper by Halliday et al., that is following hot on the heels of this one (mainly as it was reliant on this publishing before it could be) addressing the faunal similarities between these areas.
Anyway, that's all from me on my underwhelming fish fossil. I thought I could give you a lovingly crafted drawing of what part the fossils come from on a fish (see the entertaining blog from which this one post derives inspiration https://blogs.ucl.ac.uk/museums/tag/underwhelming-fossil-fish-of-the-month/), but could not do it justice. So instead here is a picture of a black drum showing off its crazy throat teeth that do look superficially similarly (but I can tell you they are very different indeed):
|A black drum (Pogonias cromis) showing off its smiles, inside and out. From http://img.photobucket.com/albums/v464/Vetcraft/drumJune52008008_zps2af54b6d.jpg|