(fish farm brought breach of warranty suit against supplier for providing feed not meeting guarantees of fat and protein ratio causing decline in fish growth; competing experts testified regarding causal link between food and fish growth; defendant filed motion for directed verdict, which was deferred; jury returned verdict of $770,229.30 in lost profits for fish farm; defendant renewed motion, which was denied; defendant appealed two issues: trial court’s admission of expert’s testimony because theories were unscientific and unreliable and impermissible damages awarded; appellate court held expert’s testimony did not create substantial prejudice to defendant and no specificity of deficiencies in expert’s scientific analysis provided; award sufficiently proved through evidence that plaintiff’s expenses remained stable but profits lost in amount jury awarded; appellate court affirmed on both issues).