An idle thought began a bizarre chain of events. "I wonder," Ty giggled out loud, "What kind of friend a fish would be, anyway?" Still not in control of his newfound power, his desire to know the answer to this burning question was enforced as his will.
Somewhere in the shallow stream below an innocent trout was suddenly struck by a jolt of transformative energy. She had been on her way to the lake at the end of the stream to spawn, but her compulsion was quite suddenly to stay put by the edge of the muddy bank. Her body was aching, and in slow progression she began to grow intelligent. She found herself wondering what land was like up there. The murky water she had lived in all her life seemed less appealing.
She began to enlarge in tiny spurts, her intelligence continued to build, and her pectoral fins and pelvic fins began to lengthen and grow stronger in a bizarre reverse evolution that her ancestors had undergone millions upon millions of years earlier. She winced as her eyes snapped from the sides of her head into binocular vision and the water suddenly seemed suffocating, dense, and she needed air. Air!! She was drowning!
It was to Ty's great surprise, then, as a two foot long lake trout suddenly burst from the water and flung herself up onto the muddy bank of the stream, gasping hoarsely in an attempt to get her breath. The warmth of the sun, the colors of this new world, and the bizarre lack of bouyancy disorientated the she-fish and she stared agape at her first sight of the upper world as she continued to grow and change. Behind her pectoral fins stubby arms began to grow while a fat neck began to emerge behind her head. Her tail slimmed, lengthened, and began to shrink into proportion while her pelvic fins gained strength and began to support her emerging legs.
"What...?" Was all Ty could manage as he watched the fish grow and grow in size, spurting larger and larger by the second. As she reached two and a half feet long she groaned in pain as her lengthening neck slimmed down and she began to crackle all over. Now her bones and anatomy were shifting, tugging, and her organs were moving around inside of her. She closed her eyes and gasped as her legs grew out, her fins turned to large webbed feet, much like scuba flippers, and her arms gained their proper size and proportion. As her pectoral fins turned into equally webbed hands her back arched and then snapped into position as her torso streamlined and turned to a small feminine body. Now her tail stretched out behind her rump as that, too, turned humanoid.
The fish opened her eyes and regarded her changing shape with awe and with her new longer neck she looked up to see the giant Ty looming over her with a shocked expression.
I know the feeling, she mused, and then gasped again as her body began to grow again. Now her shape, mostly refined, was filling out here and cinching in there. Two breasts began to form on her female chest, firm and shapely, and she knelt on the edge of the river growing in size, growing in feminimity, getting bigger and sexier and more attractive in a strange fish way in front of Ty.
Now the trout realized that either the entire world was shrinking around her or else she was getting bigger quite quickly. In no time she was the size of a child with the body of a well developed woman and now as she continued to grow larger she was also getting stronger. Apparently her humanoid form was pound for pound as buff and well toned as a female athlete, and she looked herself over in strange tingling delight as she felt her strength increasing.
Ty stared, barely breathing, and scooted back on his rear as the trout woman in front of him kept growing... and growing... and growing! Now she was five feet tall and her shiny blue scaled body looked as hard and well defined as a bodybuilder. Her breasts were large and full, and on her longer neck he saw two slits that must somehow still be her gills flutter slightly as she breathed in air instead of water. Still she grew, bigger and bustier, until finally the process began to slow as she became well over six feet tall. Her growth pulsed one more time, pushing her towards six foot seven, and then subsided entirely.
She sat there on her webbed hands sprawled out in front of Ty, some beautiful and yet alien kind of fish/human monster, and slowly she raised her trembling head to regard the boy with her oddly more defined black and yellow eyes. She blinked, raised her arm to wipe away residual drops of water from her face, and they stared at each other in silence.
"H-Hello." Ty nodded, somewhat freaked out. He wasn't sure what to say to a huge busty muscular fish woman.
Slowly, she raised herself onto one arm, got her balance, and sat back on her knees. She rubbed her head, snorted through her strange neck gills, and opened her mouth as if to say something, showing rows of sharp carnivorous fish teeth. Then her mouth closed, her eyes widened, and she looked around at the forest, into the blue sky above, and cocked her head to the side to listen to all the new noises through her equally new ear holes on the sides of her skull.
She faced Ty again, leaning back to sit herself down in front of him, and her long elegant tail splashed into the stream behind her. She stared back, in awe, and then looked back to the human. Again there was a silence between them.
"Wow." She finally said, voice soft and calm. "It's... it's so nice up here." She looked around nervously like the police were hiding in the bushes. "D-Do you think I can stay? I-I don't know if I can go back home again." She turned to regard the water and worried. What if she had to go back to the stream? Could she even fit in it now? She was so huge... And what of the water? Could she still breathe in the water? With a worried expression she turned towards the human, clenching her webbed hands together nervously, anticipating his final say with a worried expression on her fishy face.
"I think you can stay with us land dwellers." Ty affirmed with an amused and bewildered smile, and held out his hand gently.
"Oh!" The trout seemed to smile at the corners of her mouth. "Well... well that's awfully nice of you. Are you sure? I don't want to be a problem." She took his hand in own cold scaly fingers and Ty helped her to her feet as he raised up. She wobbled on her legs, unsure of them, and braced her considerable weight on the boy's shoulders as she stood up.
At 6'7" the buff and busty trout woman positively towered over Ty like a goddess, and he found himself staring up, trying to ignore her substantial chest, and looking into her eyes. They were wide, frightened, perhaps confused.
"Don't worry." Ty reassured her. "I'll take good care of you. I'm Ty! Do you have a name I can call you?"
This seemed to relax the creature, and she considered his question very carefully. "Hmmm... I guess I don't have a name like you do. Should I have one?"
"Definitely!" Ty stared at her friendly fishy eyes and smiled. He had made quite the... sexy... fish... woman... thing. Even if he didn't need to. But the strange and lovely girl needed a fitting name. Suddenly something he had read on the internet struck him. "How would you like to be called Marina?"
"I-Is that a good name for me?" She looked down in genuine innocence.
"It means 'of the sea'" Ty nodded. "Do you like it?"
The big trout lady smiled again and nodded as well. "Yes! That's very nice of you." She turned to the stream and her face seemed to fall. "Although I don't know if I will be returning to the... sea, it is very fitting."
"I'm glad you like it." Ty met her gaze again and she looked down at her flipper-feet in new awe before staring at him once more.
"So... what happens to me now, Ty?"
"Hmmm." Ty grinned. "I guess you're like a fish out of water now, huh?"
Marina blinked, the pun totally lost on her. "Yes, I am."
"Well... I suppose we could..."