Do I see Koi in pond? Plants for pond & algae control are needed ASAP. Where are you? Need that info for plant suggestions.

Would help to see your entire backyard. Nothing should be designed in isolation. This area should related to other parts of the yard.

We need to know the zone, what your soil is like, and how much shade you get.

Tall grasses in the back corner of your fence would help obscure the corner and make it feel like your space continues on. Day lilies provide nice draping leaves over the edge and can help to obscure the concrete curve making the pont feel more natural and less constructed.

@ KW PNW Z8 i am in TX

@ Kendrah I am in TX USDA plant hardiness zone 8b. Soil is clay. The bed has garden soil. There is lot of shade in the flower bed. The shed is facing south. The back fence is on east side

I am in TX USDA plant hardiness zone 8b

Question - in pic with shed on left, pond on right & fence runs right next to pond - is that the neighbor’s patio cover with supports on your side of that fence? Light orientation question - the shade created by fence on the right - is that fence on west side or south side? Trying to figure orientation as the pond needs shade from hot afternoon sun.

@ KW PNW Z8 its our carport. The shade is from south side

So, the front of pond faces west. You may need to hang a shade you can raise / lower on the front side to keep water cool & not boil the fish. TX zone 8b is verrrry different than my PNW zone 8b. Back to my first statement - pond plants first to give fish protection, shade, & maybe some nutrients. I’m no expert on ponds. Trailing/ climbing plants are pretty around water. Ferns too but can’t give you names of evergreen ferns that survive TX heat. Grasses & / or sedges / carex would be pretty. Think light & airy, things that move in a slight breeze. A visit to your local nursery should be on your list. I would plant shrubs that would soften & hide the carport posts. Hang a decoration on the gate into the carport.

I don't know much about what plants can be done for a pond but I have a few other suggestions so the the pond area blends nicely in it's surroundings. I would stain the fence in a dark colour something like the dark brown/black you have in the background of what seems to be a carport. Then paint the pergola in white. Arrange a path that leads to the pergola and your fence door. Arrange the stones nicely on the pond surround.

Pond/Rock Garden (Shade to Partial Shade, Low Water Needs)

Foxtail Fern – Soft texture, sculptural shape

Sedum (Stonecrop) – Drought-resistant, spreads naturally

Creeping Jenny – Bright green ground cover

Decorative River Rocks & Driftwood – Enhance the natural feel

Just saw you've posted more pictures and one showing a gray garden shed. So I'm showing the fence in a gray solid stain colour which also fit nicely with the background.

@Celery. Visualization, Rendering images WOW! This looks great. Thank you

I can’t tell from photos, but do you have
any sort of rock overhang or ledge extending over the water a bit? Can be just a thin shelf, but can provide some possible shade and cover for fish. Old be helpful in TX summers, as well as for the usual predators that may find their way to fish pond.

I have a piece of culvert pipe in the pond for the fish to hide

Oh a pipe tunnel sounds good.

Native Texan here, my sister in law's fish have yet to boil in full West Texas sun on her small pond but some have frozen in extreme winters.

Black paint on the fence would fry everybody not only the fish. I can't imagine the higher AC bills for all these people falling for that Black roofs and walls trend.

Canna lilies can take the Texas heat and pop back after freezing to the ground. A friend in San Antonio had them growing in the edge of her Koi pond like cattails. Frog fruit is a native low growing flower that likes the moist of of a ponds edge. You need at least one waterlily. Moonflowers and morning glories are easy to grow annual vines. And i don't care if it is invasive I love the smell of honeysuckle as well as Jasmine.

Thank you @kathleen MK. I will add waterlily and other suggestions